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DeepSeek | OpenAI | Alibaba | Anthropic | |
|---|---|---|---|---|
| Vendor | DeepSeek | OpenAI | Alibaba | Anthropic |
| Family | DeepSeek | GPT | Qwen | Claude |
| Release date | 2025-01-20 | 2026-04-23 | 2026-05-20 | 2026-02-17 |
| Context window | 128,000 tokens | 400,000 tokens | 1,000,000 tokens | 1,000,000 tokens |
| Parameters | 671B | — | — | — |
| Modality | text | text, vision, audio | text | text, vision |
| License | MIT | proprietary | proprietary | proprietary |
| Source | open weights | proprietary | proprietary | proprietary |
| Description | Reasoning-focused open-weight 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. | Alibaba's flagship agent model — 1M-token context, extended-thinking mode, 56.6 on the Artificial Analysis Intelligence Index v4.0 (5th overall, #1 Chinese). 50.8% on Terminal-Bench Hard. Designed for long-horizon agent workloads (hundreds-to-thousands of steps). Closed-weight, $2.50/$7.50 per 1M tokens. | Anthropic's mid-tier flagship — released 12 days after Opus 4.6 and matching most of its capabilities at ~40% the API cost ($3/$15 per 1M tokens). 1M-token context. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | 87.6% | 83.7% | 85.4% |
| GPQA-D | — | 89.4% | 83.0% | 85.8% |
| HumanEval | — | 96.8% | 93.9% | 95.9% |
| Aider | — | 89.7% | 78.4% | 83.6% |
| AIME-25 | 79.8% | 94.2% | 90.4% | 87.4% |
| LiveCB | — | 78.9% | 71.0% | 73.8% |
| MMMU | — | 78.4% | — | — |
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