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 GPT-5.5OpenAI |  DeepSeek-V4-FlashDeepSeek |  Claude 4.5 HaikuAnthropic |  Grok 4xAI | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | Anthropic | xAI |
| Family | GPT | DeepSeek | Claude | Grok |
| Release date | 2026-04-23 | 2026-04-22 | 2025-10-01 | 2025-07-09 |
| Context window | 400,000 tokens | 1,000,000 tokens | 200,000 tokens | 256,000 tokens |
| Parameters | — | 284B (13B active) | — | — |
| Modality | text, vision, audio | text | text, vision | text |
| License | proprietary | MIT | proprietary | proprietary |
| Source | proprietary | open weights | proprietary | proprietary |
| Description | 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. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | Fast, cost-effective Claude model. | — |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 87.6% | — | — | 82.8% |
| GPQA-D | 89.4% | — | — | 87.5% |
| HumanEval | 96.8% | — | — | — |
| Aider | 89.7% | — | — | 72.5% |
| AIME-25 | 94.2% | — | — | 86.1% |
| LiveCB | 78.9% | — | — | 65.3% |
| MMMU | 78.4% | — | — | — |
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Claude 4.8 Opusmax
Qwen3.7-Maxmax
Gemini 3.5maxGemini OmnimaxGPT-5.5✓Qwen3.6-27BmaxDeepSeek-V4-Flash✓DeepSeek-V4-PromaxGemini 3 PromaxClaude 4.7 OpusmaxClaude 4.6 SonnetmaxClaude 4.5 Haiku✓DeepSeek-V3.1maxGPT-5maxGrok 4✓Gemini 2.5 FlashmaxQwen3 235Bmaxo3maxGPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.