# How to Use ChatGPT? A Comprehensive 2026 Guide — From Beginner to Advanced

> Source: https://sukruyusufkaya.com/en/blog/chatgpt-kullanim-rehberi
> Updated: 2026-05-13T19:57:07.125Z
> Type: blog
> Category: yapay-zeka
**TLDR:** A comprehensive Turkish guide to using ChatGPT from beginner to professional level. From signup to Plus/Pro plan comparison, building Custom GPTs to Vision/Voice/Operator features, 25 day-to-day use cases to KVKK-compliant enterprise use — everything Turkish users need to know about ChatGPT as of 2026.

<tldr data-summary="[&#34;ChatGPT, released by OpenAI in November 2022, reached 100M users in 2 months and serves 800M+ monthly active users as of 2026.&#34;,&#34;The free plan suits casual experimentation; professional use needs Plus ($20/month), heavy use Pro ($200/month), and enterprises need Team or Enterprise.&#34;,&#34;2026 model family: GPT-5 (general), GPT-5 Pro (deep reasoning), GPT-5 mini and GPT-4o-mini (fast), o-series (deep reasoning).&#34;,&#34;Building Custom GPTs — personal or enterprise AI assistants — requires Plus or above; sharable on the GPT Store.&#34;,&#34;For Turkish users, KVKK compliance matters: prompts with personal data require Team/Enterprise (training opt-out) or anonymization.&#34;]" data-one-line="ChatGPT, with the right subscription + good prompts + conscious privacy choices, can save a Turkish professional 5-15 hours per week — leading the consumer AI assistant category."></tldr>

## 1. What is ChatGPT?

ChatGPT, released by OpenAI on **November 30, 2022**, brought the GPT model family to consumers through a chat interface. Within **2 months** it reached **100 million monthly active users**, the fastest-growing consumer app ever at the time. As of 2026 it serves **800M+ monthly active users**, ranking among the top 5 most-visited websites globally.

<definition-box data-term="ChatGPT" data-definition="An AI app released by OpenAI in 2022 that delivers the GPT (Generative Pre-trained Transformer) model family through a chat interface to end users. Available on web, iOS, Android, macOS, and Windows; modern versions (GPT-5) unify text, image, voice, video, code, and data analysis in one interface." data-also="Chat Generative Pre-trained Transformer" data-wikidata="Q115447022"></definition-box>

<stat-callout data-value="800M+" data-context="ChatGPT's global monthly active users as of 2026" data-outcome="exceed 800 million, cementing its position as the most widely recognized AI brand after Google." data-source="{&#34;label&#34;:&#34;OpenAI Public Statements / Similarweb&#34;,&#34;url&#34;:&#34;https://www.similarweb.com/website/chat.openai.com/&#34;,&#34;date&#34;:&#34;2026&#34;}"></stat-callout>

### ChatGPT, OpenAI, and GPT Models — Three Different Things

- **OpenAI:** The company (founded 2015, San Francisco)
- **GPT (GPT-5, GPT-4o, GPT-5 Pro, etc.):** The model family — trained neural networks
- **ChatGPT:** The app delivering those models to end users via chat

Which model is "underneath" ChatGPT depends on your plan and model selection.

## 2. Sign-up and First Use

### 2.1. Sign Up

Visit **chat.openai.com** or **chatgpt.com**. Three entry options: email + password, Google sign-in, Apple sign-in. Mobile apps are available on the App Store and Google Play. Desktop apps for macOS and Windows are downloadable from the official site.

### 2.2. Account Verification

OpenAI may require phone verification for new accounts in some regions. **Turkish numbers are accepted** (some earlier VPN issues are no longer applicable as of 2024).

### 2.3. Quick Interface Tour

Four main areas:

- **Left panel:** Conversation history, "New chat", projects/folders, Custom GPTs
- **Top center:** Model selector (GPT-5 / GPT-5 mini / o1 / o3) and "Tools" menu (Search, Reason, Deep Research, Canvas, Voice)
- **Main area:** Active conversation
- **Top right:** Profile, settings, billing

## 3. Plans Comparison: Which is for You?

ChatGPT offers five tiers as of 2026. The right choice depends on usage intensity + budget + data sensitivity.

<comparison-table data-caption="ChatGPT Plan Comparison — 2026" data-headers="[&#34;Plan&#34;,&#34;Monthly&#34;,&#34;Model Access&#34;,&#34;Limit&#34;,&#34;Data for Training&#34;,&#34;Target User&#34;]" data-rows="[{&#34;feature&#34;:&#34;Free&#34;,&#34;values&#34;:[&#34;$0&#34;,&#34;GPT-5 mini, GPT-4o-mini, limited GPT-5&#34;,&#34;Low&#34;,&#34;Used for training&#34;,&#34;Trial + occasional&#34;]},{&#34;feature&#34;:&#34;Plus&#34;,&#34;values&#34;:[&#34;$20&#34;,&#34;Full GPT-5, o1, o3, Voice, Vision, DALL-E, Canvas, Custom GPT&#34;,&#34;High (5x Free)&#34;,&#34;Used for training (opt-out)&#34;,&#34;Professional individuals&#34;]},{&#34;feature&#34;:&#34;Pro&#34;,&#34;values&#34;:[&#34;$200&#34;,&#34;GPT-5 Pro (deep reasoning), Operator, Sora wide limit, more deep research&#34;,&#34;Very high&#34;,&#34;Used for training (opt-out)&#34;,&#34;Power users, devs, researchers&#34;]},{&#34;feature&#34;:&#34;Team&#34;,&#34;values&#34;:[&#34;$25/seat (annual) / $30 monthly&#34;,&#34;Plus features + shared workspace&#34;,&#34;Higher than Plus&#34;,&#34;NOT used for training&#34;,&#34;SMB / small teams&#34;]},{&#34;feature&#34;:&#34;Enterprise&#34;,&#34;values&#34;:[&#34;Custom&#34;,&#34;All Pro features + SSO + DLP + audit + unlimited&#34;,&#34;Unlimited&#34;,&#34;NOT used for training&#34;,&#34;Large enterprises, regulated sectors&#34;]}]"></comparison-table>

### Training Opt-Out

By default, Free and Plus data may be used for training. To disable: **Settings → Data Controls → "Improve the model for everyone"** off. Team and Enterprise have it disabled by default — contractually guaranteed.

## 4. The ChatGPT Model Family (2026)

<comparison-table data-caption="Models in ChatGPT (2026)" data-headers="[&#34;Model&#34;,&#34;Speed&#34;,&#34;Reasoning&#34;,&#34;Use Case&#34;]" data-rows="[{&#34;feature&#34;:&#34;GPT-5&#34;,&#34;values&#34;:[&#34;Fast&#34;,&#34;Very high&#34;,&#34;General-purpose (default)&#34;]},{&#34;feature&#34;:&#34;GPT-5 Pro&#34;,&#34;values&#34;:[&#34;Slow&#34;,&#34;Highest&#34;,&#34;Complex academic / legal / financial problems&#34;]},{&#34;feature&#34;:&#34;GPT-5 mini&#34;,&#34;values&#34;:[&#34;Very fast&#34;,&#34;Medium-high&#34;,&#34;Daily light queries&#34;]},{&#34;feature&#34;:&#34;GPT-4o&#34;,&#34;values&#34;:[&#34;Fast&#34;,&#34;High&#34;,&#34;Multimodal (image/voice)&#34;]},{&#34;feature&#34;:&#34;GPT-4o-mini&#34;,&#34;values&#34;:[&#34;Fastest&#34;,&#34;Medium&#34;,&#34;Fast queries, budget&#34;]},{&#34;feature&#34;:&#34;o1&#34;,&#34;values&#34;:[&#34;Slow&#34;,&#34;Very high (CoT)&#34;,&#34;Math, code reasoning&#34;]},{&#34;feature&#34;:&#34;o3&#34;,&#34;values&#34;:[&#34;Slow&#34;,&#34;Highest (deep)&#34;,&#34;Complex multi-step problems&#34;]}]"></comparison-table>

## 5. Core Features and Configuration

### 5.1. Custom Instructions

Save personal facts you'd otherwise repeat: role, goal, preferred response style. ChatGPT auto-applies these across conversations.

### 5.2. Memory

ChatGPT can retain memory across conversations: your name, projects, preferences, recurring topics. Manage via **Settings → Personalization → Memory** — see, delete, disable, or add memories.

<callout-box data-variant="warning" data-title="KVKK Sensitivity">

Memory is fine, but never store customer/employee personal data in it. For KVKK-covered data, use Team/Enterprise + the business-data opt-out.

</callout-box>

### 5.3. Voice (Advanced Voice Mode)

Real-time voice on mobile and desktop. Natural Turkish support; ideal for hands-free use (driving, walking).

### 5.4. Vision (Image Understanding)

Upload images for analysis: describe content, translate signs, read error messages, transcribe handwriting, extract chart data, etc.

### 5.5. Canvas

A side-panel editor for long text/code; supports local edits ("shorten this paragraph," "refactor this function").

### 5.6. Code Interpreter / Advanced Data Analysis

A Python sandbox. Upload Excel/CSV/PDF/images and ask ChatGPT to analyze, plot, transform.

### 5.7. Deep Research

A Pro feature that performs 5-30 minute research, scans many sources, synthesizes a cited report.

### 5.8. Search and Browse

Live web search — addresses the knowledge-cutoff problem.

## 6. Building a Custom GPT

A **Custom GPT** lets you specialize ChatGPT for a specific task. Available in Plus and above.

### 6.1. How

1. Left panel: **Explore GPTs** → **+ Create**
2. Through guided flow or **Configure** tab
3. Name, description, icon
4. **Instructions:** how the GPT should behave (like a system prompt)
5. **Knowledge:** upload PDFs, documents, data (RAG)
6. **Actions:** external API integration
7. **Save** → keep private, share via link, or publish publicly

### 6.2. Practical Custom GPT Examples

- **Internal company assistant** — policy docs loaded, answers employee questions
- **Customer service assistant** — product catalog + FAQ loaded
- **Tax advisor** — VAT and income-tax guides loaded
- **Code review bot** — your team's standards loaded
- **Content editor** — brand voice + sample copy loaded

### 6.3. GPT Store

OpenAI's marketplace for Custom GPTs. Millions available.

**Note:** Custom GPT contents are processed by OpenAI when you publish. For sensitive internal data, prefer private/internal options or Enterprise plan.

## 7. 25 Practical ChatGPT Use Cases

### 7.1. Business Communication

1. Writing and replying to emails
2. Summarizing meeting transcripts
3. Preparing presentation content
4. Drafting reports

### 7.2. Productivity & Office

5. Writing Excel/Sheets formulas
6. VLOOKUP/INDEX-MATCH help
7. Word/Pages templates
8. Extracting data from PDFs

### 7.3. Creative

9. Blog post drafts (SEO-friendly)
10. Social media post series
11. Ad copy variations
12. Image generation with DALL-E

### 7.4. Learning & Education

13. Simplifying complex topics
14. Generating quiz/flashcards
15. Language learning practice
16. Learning to code

### 7.5. Software Development

17. Quick code writing
18. Debugging
19. Code explanation
20. Natural language → SQL

### 7.6. Business & Strategy

21. SWOT analysis
22. Decision support
23. Negotiation role-play
24. Market research via Deep Research

### 7.7. Personal

25. Plans/schedules (meals, workouts, travel)

<callout-box data-variant="tip" data-title="3x Productivity Tip">

Use ChatGPT **iteratively**, not once. Rather than accept the first answer, iterate with "shorten," "add concrete examples," "make the tone slightly more formal." 3-5 turns of iteration produce 3-5x faster + better outputs than writing from scratch.

</callout-box>

## 8. Effective Prompting — 5 Quick Rules

1. **Define the role.** "You are a 10-year experienced Turkish tax advisor."
2. **Clarify the task.** "Review document X and produce a report in format Y."
3. **Provide context.** "My company is small B2B SaaS targeting SMEs."
4. **Set constraints.** "Limit answer to 300 words, Turkish, no code."
5. **Show examples.** Few-shot the desired format.

(See the Prompt Engineering Guide on this site for depth.)

## 9. KVKK and Privacy — Critical for Turkish Users

### 9.1. What Data Goes to ChatGPT?

Everything you type — questions, files, images — goes to OpenAI's US-based servers. Free/Plus may be used for training (opt-out available); Team/Enterprise is not used for training.

### 9.2. KVKK Risk Scenarios

- **Customer personal data** in prompts (national ID, name, phone, email) → KVKK breach potential
- **Employee performance data** → KVKK + labor law risk
- **Health data** → KVKK special-category — strict protection
- **Customer chat transcripts** → explicit consent required
- **Internal strategy** → trade-secret risk

### 9.3. 5 Practical Rules for KVKK-Compliant Use

1. Anonymize: use [customer_a], [employee_b] instead of real IDs.
2. Use Team/Enterprise plans: contractual opt-out.
3. Don't upload sensitive files: check for personal data first.
4. Disable Memory or remove sensitive entries.
5. Build a KVKK compliance framework: company policy, training, audit logs.

See our compliance guide for depth.

## 10. Common Mistakes and Fixes

### 10.1. ChatGPT's Answer is Wrong

**Cause:** Hallucination. **Fix:** Always verify for critical decisions.

### 10.2. Same Question, Different Answer

**Cause:** Probabilistic model. **Fix:** Ask for citations or retry.

### 10.3. "Couldn't connect to the internet"

**Cause:** Search/Browse failed. **Fix:** Say "search the web" explicitly.

### 10.4. Limit Reached

**Fix:** Switch to GPT-5 mini, wait, or upgrade.

### 10.5. Mixed Turkish Output

**Cause:** Memory/Custom Instructions are in English. **Fix:** Add explicit Turkish instruction.

### 10.6. Vision Didn't Understand

**Fix:** Upload high-resolution image; explicitly state what to look for.

### 10.7. Custom GPT Misbehaves

**Cause:** Weak or contradictory instructions. **Fix:** Rewrite using the 6-component method; add 1-2 example files to Knowledge.

## 11. ChatGPT's Limits

- **Knowledge cutoff** — solved partially by web search
- **Weak math** — use Code Interpreter or o-series
- **Politically/socially balanced responses** — may refuse extreme positions
- **Local Turkey-specific knowledge gaps** — verify with experts
- **Character / counting tasks** — token-level model

## 12. ChatGPT vs Claude vs Gemini — Quick Comparison

<comparison-table data-caption="ChatGPT vs Claude vs Gemini (2026)" data-headers="[&#34;Feature&#34;,&#34;ChatGPT (GPT-5)&#34;,&#34;Claude Opus 4.7&#34;,&#34;Gemini 3&#34;]" data-rows="[{&#34;feature&#34;:&#34;Turkish fluency&#34;,&#34;values&#34;:[&#34;Very good&#34;,&#34;Very good&#34;,&#34;Good&#34;]},{&#34;feature&#34;:&#34;Custom assistants&#34;,&#34;values&#34;:[&#34;Custom GPT&#34;,&#34;Projects&#34;,&#34;Gem&#34;]},{&#34;feature&#34;:&#34;Code writing&#34;,&#34;values&#34;:[&#34;Good&#34;,&#34;Best&#34;,&#34;Good&#34;]},{&#34;feature&#34;:&#34;Image generation&#34;,&#34;values&#34;:[&#34;DALL-E built-in&#34;,&#34;None&#34;,&#34;Imagen built-in&#34;]},{&#34;feature&#34;:&#34;Video generation&#34;,&#34;values&#34;:[&#34;Sora built-in&#34;,&#34;None&#34;,&#34;Veo 3&#34;]},{&#34;feature&#34;:&#34;Computer Use&#34;,&#34;values&#34;:[&#34;Operator (Pro)&#34;,&#34;Computer Use&#34;,&#34;Limited&#34;]},{&#34;feature&#34;:&#34;Pro price&#34;,&#34;values&#34;:[&#34;$200&#34;,&#34;$200&#34;,&#34;$200&#34;]},{&#34;feature&#34;:&#34;Ecosystem&#34;,&#34;values&#34;:[&#34;Largest 3rd party&#34;,&#34;Developer-friendly&#34;,&#34;Google Workspace&#34;]}]"></comparison-table>

## 13. Frequently Asked Questions

<callout-box data-variant="answer" data-title="Plus or Pro?">

Plus ($20) suffices for most professional use. Choose **Pro ($200)** only if: (a) you need o3/GPT-5 Pro deep reasoning, (b) you use Operator daily, (c) you produce lots of Sora video, (d) you hit limits. Otherwise stay on Plus.

</callout-box>

<callout-box data-variant="answer" data-title="Does ChatGPT use my data?">

Free/Plus: **yes, may be used for training** (opt-out available). **Team/Enterprise: no** — contractual guarantee. For KVKK-risk data, use Team/Enterprise.

</callout-box>

<callout-box data-variant="answer" data-title="How good is ChatGPT's Turkish?">

As of 2026, GPT-5 and GPT-5 Pro speak Turkish **near-natively**. Local-domain knowledge gaps exist (Turkish law, tax rules) — expert verification mandatory. Sufficient for general communication, writing, translation, code, analysis.

</callout-box>

<callout-box data-variant="answer" data-title="Is the ChatGPT mobile app in Turkish?">

Yes. iOS and Android UIs are in Turkish; Voice Mode supports Turkish.

</callout-box>

<callout-box data-variant="answer" data-title="Can I upload files?">

Yes. Limited on Free, broad on Plus/Pro/Team/Enterprise. PDF, Word, Excel, CSV, image, audio, video supported. Per-file limit ~512MB; batch uploads possible.

</callout-box>

<callout-box data-variant="answer" data-title="Do I need to know how to code to build Custom GPTs?">

No. You only need to write clear Instructions. Actions (API calls) require JSON schemas and URLs — intermediate technical knowledge.

</callout-box>

<callout-box data-variant="answer" data-title="Can I integrate ChatGPT with Excel?">

Not directly. Upload Excel to ChatGPT for analysis; copy formulas back to Excel. For automation, use Power Automate + OpenAI API.

</callout-box>

<callout-box data-variant="answer" data-title="Does ChatGPT work on WhatsApp?">

OpenAI's official WhatsApp integration runs in the US (+1 800 242-8478); Turkey access is limited. Third-party integrations exist but have privacy concerns.

</callout-box>

<callout-box data-variant="answer" data-title="Is using ChatGPT for student assignments legal?">

Academic-integrity rules vary. Major Turkish universities published AI use policies in 2024-2026. **Help** is usually allowed; **submitting AI-written work as your own** may be academic dishonesty.

</callout-box>

<callout-box data-variant="answer" data-title="Can ChatGPT give investment/medical/legal advice?">

ChatGPT provides information, not advice. For official advice, licensed professionals are required. ChatGPT's outputs in these areas are informational only.

</callout-box>

<callout-box data-variant="answer" data-title="Is making passive income with ChatGPT real?">

Mostly exaggerated. Realistic case: leverage ChatGPT to enhance an existing service (consulting, writing, training, agency) to lift productivity 2-3x. Not a zero-to-passive-income machine.

</callout-box>

<callout-box data-variant="answer" data-title="Does ChatGPT answer from web search or training data?">

GPT-5 does both. When web search is active, it queries live; otherwise it uses training data + memory. For current info, say "search the web."

</callout-box>

<callout-box data-variant="answer" data-title="ChatGPT mobile is slow — fix?">

Three steps: (1) use GPT-5 mini, (2) verify network, (3) restart the app. If still slow, US peak hours may be the cause.

</callout-box>

<callout-box data-variant="answer" data-title="How do I cancel subscription?">

Web/Desktop: Profile → Settings → Manage subscription → Cancel. Mobile (App Store): Apple ID → Subscriptions → ChatGPT → Cancel. Mobile (Google Play): Play Store → Subscriptions → ChatGPT → Cancel.

</callout-box>

<callout-box data-variant="answer" data-title="How do I monetize my Custom GPT?">

OpenAI launched a revenue-sharing program (US creators first; Turkey support expanding). The most practical route today is offering Custom GPT development services to companies.

</callout-box>

## 14. Take ChatGPT to a Professional Level — Next Steps

1. **Learn prompt engineering.** Better prompts = better outputs = fewer iterations.
2. **Build Custom GPTs.** Personal assistants for repetitive tasks.
3. **Explore the API.** No-code with Make/n8n/Zapier; programmatic with Python/JS.
4. **Position strategically in your company.** Combine AI training + policy + Team plan.

## 15. Strategic Notes for Turkish Companies

### 15.1. SMB Adoption

For 5-50 employee companies, **Team plan + 3 Custom GPTs (operations, sales, finance)** delivers strong productivity at modest cost. $25/seat × 10 = $250/month for 30-50 hours of weekly time savings.

### 15.2. Large Enterprise Adoption

Banks, telcos, retail chains need **Enterprise plan + Custom GPTs + KVKK compliance framework + internal training**. AI policy, acceptable use, audit, training — a separate compliance project.

### 15.3. Education

AI literacy is becoming required in universities/schools. Teachers leverage Custom GPTs (lesson plans, exam questions, feedback); students need responsible-use training.

### 15.4. Freelancers

Designers, copywriters, developers, translators, trainers, consultants — ChatGPT Plus + Custom GPT + good prompts = 2-3x output per hour.

## 16. Next Steps

To shape ChatGPT or general AI strategy in your company:

1. **AI Strategy Workshop.** Use-case mapping, plan selection, Custom GPT architecture, KVKK — 1-day workshop.
2. **AI Literacy Training.** 4-8 hours hands-on — ChatGPT basics, prompt engineering, safe use, sectoral cases.
3. **Custom GPT Development.** Internal assistants — operations, sales, customer service.

Reach out via the contact form.

<references-list data-items="[{&#34;title&#34;:&#34;OpenAI ChatGPT&#34;,&#34;url&#34;:&#34;https://chatgpt.com/&#34;,&#34;author&#34;:&#34;OpenAI&#34;,&#34;publishedAt&#34;:&#34;2026&#34;,&#34;publisher&#34;:&#34;OpenAI&#34;},{&#34;title&#34;:&#34;ChatGPT Reaches 100M Users in 2 Months&#34;,&#34;url&#34;:&#34;https://www.reuters.com/technology/chatgpt-sets-record-fastest-growing-user-base-analyst-note-2023-02-01/&#34;,&#34;author&#34;:&#34;Reuters&#34;,&#34;publishedAt&#34;:&#34;2023-02&#34;,&#34;publisher&#34;:&#34;Reuters&#34;},{&#34;title&#34;:&#34;OpenAI Enterprise Privacy&#34;,&#34;url&#34;:&#34;https://openai.com/enterprise-privacy/&#34;,&#34;author&#34;:&#34;OpenAI&#34;,&#34;publishedAt&#34;:&#34;2025&#34;,&#34;publisher&#34;:&#34;OpenAI&#34;},{&#34;title&#34;:&#34;OpenAI Help Center&#34;,&#34;url&#34;:&#34;https://help.openai.com/&#34;,&#34;author&#34;:&#34;OpenAI&#34;,&#34;publishedAt&#34;:&#34;2026&#34;,&#34;publisher&#34;:&#34;OpenAI&#34;},{&#34;title&#34;:&#34;GPT-4 Technical Report&#34;,&#34;url&#34;:&#34;https://arxiv.org/abs/2303.08774&#34;,&#34;author&#34;:&#34;OpenAI&#34;,&#34;publishedAt&#34;:&#34;2023-03&#34;,&#34;publisher&#34;:&#34;OpenAI&#34;},{&#34;title&#34;:&#34;OpenAI Operator&#34;,&#34;url&#34;:&#34;https://openai.com/index/introducing-operator/&#34;,&#34;author&#34;:&#34;OpenAI&#34;,&#34;publishedAt&#34;:&#34;2025-01&#34;,&#34;publisher&#34;:&#34;OpenAI&#34;},{&#34;title&#34;:&#34;KVKK - Law No. 6698&#34;,&#34;url&#34;:&#34;https://www.kvkk.gov.tr/&#34;,&#34;author&#34;:&#34;Republic of Turkiye - KVKK&#34;,&#34;publishedAt&#34;:&#34;2016-04-07&#34;,&#34;publisher&#34;:&#34;Republic of Turkiye&#34;},{&#34;title&#34;:&#34;Similarweb ChatGPT Traffic&#34;,&#34;url&#34;:&#34;https://www.similarweb.com/website/chat.openai.com/&#34;,&#34;author&#34;:&#34;Similarweb&#34;,&#34;publishedAt&#34;:&#34;2026&#34;,&#34;publisher&#34;:&#34;Similarweb&#34;},{&#34;title&#34;:&#34;GPT Store&#34;,&#34;url&#34;:&#34;https://chatgpt.com/gpts&#34;,&#34;author&#34;:&#34;OpenAI&#34;,&#34;publishedAt&#34;:&#34;2026&#34;,&#34;publisher&#34;:&#34;OpenAI&#34;},{&#34;title&#34;:&#34;OpenAI Tokenizer&#34;,&#34;url&#34;:&#34;https://platform.openai.com/tokenizer&#34;,&#34;author&#34;:&#34;OpenAI&#34;,&#34;publishedAt&#34;:&#34;2026&#34;,&#34;publisher&#34;:&#34;OpenAI&#34;}]"></references-list>

---

This is a living document; the ChatGPT ecosystem (new models, features, pricing) shifts every quarter, so it is **updated quarterly**.