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 GPT-5.5OpenAI | GPT-4.1 OpenAI |  Llama 4 ScoutMeta | o3 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | Meta | OpenAI |
| Family | GPT | GPT | Llama | o-series |
| Release date | 2026-04-23 | 2025-04-14 | 2025-04-05 | 2025-04-16 |
| Context window | 400,000 tokens | 1,000,000 tokens | 10,000,000 tokens | 200,000 tokens |
| Parameters | — | — | 109B | — |
| Modality | text, vision, audio | text, vision | text, vision | text, vision |
| License | proprietary | proprietary | Llama 4 Community License | proprietary |
| Source | proprietary | proprietary | open weights | 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. | — | — | Reasoning-focused model in the o-series. |
| Links |
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Gemini 2.5 Flashmax
Claude 4.6 SonnetmaxGPT-5.5✓
DeepSeek-V4-Flashmax
Qwen3.6-27BmaxGemini 3 PromaxDeepSeek-V4-PromaxClaude 4.7 OpusmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5max
Grok 4maxQwen3 235Bmaxo3✓GPT-4.1✓Llama 4 Scout✓Llama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.