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AI & LLM Tools
ChatGPT Models List
Transform, format, and optimize your data instantly with this free client-side tool.
Comprehensive historical overview of models, status, release dates and use cases.
| Model ID | Status | Release Date | Context Limit | Best Use Case |
|---|---|---|---|---|
| GPT-5.5 Pro gpt-5.5-pro | Active | Apr 2026 | 1M | Research-grade, complex agents |
| GPT-5.5 gpt-5.5 | Active | Apr 2026 | 1M | Flagship, deep reasoning |
| GPT-5.4 gpt-5.4 | Active | Mar 2026 | 1M | Production workhorse |
| GPT-5.4 Mini gpt-5.4-mini | Active | Mar 2026 | 1M | Balanced production tasks |
| GPT-5.4 Nano gpt-5.4-nano | Active | Mar 2026 | 1M | High-volume, simple tasks |
| GPT-5.3 gpt-5.3 | Active | Feb 2026 | 256K | Real-time coding |
| GPT-5.2 gpt-5.2 | Retired | Dec 2025 | 256K | Legacy GPT-5 |
| GPT-5.1 gpt-5.1 | Retired | Nov 2025 | 256K | Legacy GPT-5 |
| GPT-5 gpt-5 | Retired | Aug 2025 | 256K | Legacy GPT-5 |
| o3-Pro o3-pro | Active | Jan 2026 | 200K | Reasoning, logic, math |
| o3-mini o3-mini | Active | Jan 2025 | 200K | Fast STEM reasoning |
| o1 o1 | Active | Dec 2024 | 200K | Deep reasoning |
| o1-mini o1-mini | Active | Sep 2024 | 128K | Cost-effective reasoning |
| GPT-4.1 gpt-4.1 | Deprecated | Apr 2025 | 128K | Legacy GPT-4 |
| GPT-4o gpt-4o | Deprecated | May 2024 | 128K | Legacy flagship multimodal |
| GPT-4o Mini gpt-4o-mini | Deprecated | Jul 2024 | 128K | Legacy fast multimodal |
| GPT-4 Turbo gpt-4-turbo | Retired | Nov 2023 | 128K | Legacy flagship |
| GPT-4 gpt-4 | Retired | Mar 2023 | 8K/32K | Legacy GPT-4 |
| GPT-3.5 Turbo gpt-3.5-turbo | Retired | Mar 2022 | 16K | Legacy fast model |
| GPT-3 gpt-3 | Retired | Jun 2020 | 2K | Legacy GPT-3 |
| GPT-2 gpt-2 | Retired | Feb 2019 | 1K | Historical model |
| GPT-1 gpt-1 | Retired | Jun 2018 | 512 | Historical model |
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Explore LibraryFrequently Asked Questions
Got questions? We've got answers.
The ChatGPT Models List tool is designed to help you quickly calculate, analyze, or generate AI-related data directly in your browser.
No! All calculations, generation, and processing happen locally in your browser. We do not send your data to OpenAI, Anthropic, Google, or any external servers.
Yes, we use the latest pricing and token formulas provided by model vendors to give you accurate estimates.
Absolutely. You can use the ChatGPT Models List tool completely free of charge with no usage limits or sign-up required.
No API keys are required. This tool works independently of any API.
Yes, the tool is fully responsive and works perfectly on mobile phones, tablets, and desktop computers.
We regularly update our model specifications, pricing, and context limits to reflect the latest industry changes.
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