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Anthropic | xAI | OpenAI | ||
|---|---|---|---|---|
| Vendor | Anthropic | xAI | OpenAI | |
| Family | Claude | Gemini | Grok | GPT |
| Release date | 2025-10-01 | 2026-05-20 | 2025-07-09 | 2026-04-23 |
| Context window | 200,000 tokens | 1,000,000 tokens | 256,000 tokens | 400,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision | text, vision, audio, video | text | text, vision, audio |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Fast, cost-effective Claude model. | Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single 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. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | — | 82.8% | 87.6% |
| GPQA-D | — | — | 87.5% | 89.4% |
| HumanEval | — | — | — | 96.8% |
| Aider | — | — | 72.5% | 89.7% |
| AIME-25 | — | — | 86.1% | 94.2% |
| LiveCB | — | — | 65.3% | 78.9% |
| MMMU | — | 82.5% | — | 78.4% |
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