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 DeepSeek-V3.1DeepSeek |  Claude 4.5 HaikuAnthropic |  GPT-5.5OpenAI | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | Anthropic | OpenAI | OpenAI |
| Family | DeepSeek | Claude | GPT | GPT |
| Release date | 2025-08-21 | 2025-10-01 | 2026-04-23 | 2025-08-07 |
| Context window | 128,000 tokens | 200,000 tokens | 400,000 tokens | 400,000 tokens |
| Parameters | 671B | — | — | — |
| Modality | text | text, vision | text, vision, audio | text, vision, audio |
| License | MIT | proprietary | proprietary | proprietary |
| Source | open weights | proprietary | proprietary | proprietary |
| Description | Large MoE open-weight model. Predecessor to DeepSeek-V4. | Fast, cost-effective Claude model. | OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
| Links |
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Gemini 2.5 FlashmaxClaude 4.6 SonnetmaxGPT-5.5✓DeepSeek-V4-Flashmax
Qwen3.6-27BmaxGemini 3 PromaxDeepSeek-V4-PromaxClaude 4.7 OpusmaxClaude 4.5 Haiku✓DeepSeek-V3.1✓GPT-5✓
Grok 4maxQwen3 235Bmaxo3maxGPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.