Compare models
Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
Comparing agents instead? Switch to agent compare →
 GPT-5.5OpenAI | o3 OpenAI |  Grok 4xAI |  Gemini 2.5 Pro | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | xAI | |
| Family | GPT | o-series | Grok | Gemini |
| Release date | 2026-04-23 | 2025-04-16 | 2025-07-09 | 2025-03-25 |
| Context window | 400,000 tokens | 200,000 tokens | 256,000 tokens | 2,000,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio | text, vision | text | text, vision, audio, video |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | 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. | Reasoning-focused model in the o-series. | — | Predecessor to Gemini 3 Pro. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 87.6% | — | 82.8% | 84.1% |
| GPQA-D | 89.4% | 87.7% | 87.5% | 84.0% |
| HumanEval | 96.8% | — | — | — |
| Aider | 89.7% | — | 72.5% | — |
| AIME-25 | 94.2% | 88.9% | 86.1% | — |
| LiveCB | 78.9% | — | 65.3% | — |
| MMMU | 78.4% | — | — | 72.4% |
Add a model
Claude 4.8 Opusmax
Qwen3.7-MaxmaxGemini 3.5maxGemini OmnimaxGPT-5.5✓Qwen3.6-27Bmax
DeepSeek-V4-FlashmaxDeepSeek-V4-PromaxGemini 3 PromaxClaude 4.7 OpusmaxClaude 4.6 SonnetmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5maxGrok 4✓Gemini 2.5 FlashmaxQwen3 235Bmaxo3✓GPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 Pro✓DeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.