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 Claude 4.6 SonnetAnthropic |  o3OpenAI |  Gemini Omni | |
|---|---|---|---|
| Vendor | Anthropic | OpenAI | |
| Family | Claude | o-series | Gemini |
| Release date | 2026-02-17 | 2025-04-16 | 2026-05-20 |
| Context window | 1,000,000 tokens | 200,000 tokens | 1,000,000 tokens |
| Parameters | — | — | — |
| Modality | text, vision | text, vision | text, vision, audio, video |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | 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. | Reasoning-focused model in the o-series. | Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model. |
| Links | |||
| Benchmarks | |||
| MMLU-Pro | 85.4% | — | — |
| GPQA-D | 85.8% | 87.7% | — |
| HumanEval | 95.9% | — | — |
| Aider | 83.6% | — | — |
| AIME-25 | 87.4% | 88.9% | — |
| LiveCB | 73.8% | — | — |
| MMMU | — | — | 82.5% |
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Claude 4.8 Opus+
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