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 GPT-5.6 SolOpenAI |  Claude 4.7 OpusAnthropic | |
|---|---|---|
| Vendor | OpenAI | Anthropic |
| Family | GPT | Claude |
| Release date | 2026-06-26 | 2026-04-16 |
| Context window | — | 1,000,000 tokens |
| Parameters | — | — |
| Modality | text, vision, audio | text, vision |
| License | proprietary | proprietary |
| Source | proprietary | proprietary |
| Description | Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens. | Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle). Optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6. |
| Links | ||
| Benchmarks | ||
| MMLU-Pro | — | 88.2% |
| GPQA-D | — | 90.1% |
| HumanEval | — | 97.4% |
| Aider | — | 91.2% |
| AIME-25 | — | 93.5% |
| LiveCB | — | 80.2% |
| MMMU | — | 79.0% |
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GPT-5.6 Sol✓Claude 4.8 Opus+
Qwen3.7-Max+
Gemini 3.5 Flash+Gemini 3.5+Gemini Omni+GPT-5.5+
DeepSeek-V4-Flash+Gemini 3 Pro+DeepSeek-V4-Pro+Qwen3.6-27B+Claude 4.7 Opus✓Claude 4.6 Sonnet+Claude 4.5 Haiku+DeepSeek-V3.1+GPT-5 Pro+GPT-5+
Grok 4+Gemini 2.5 Flash+Qwen3 235B+o3+GPT-4.1+
Llama 4 Scout+Llama 4 Maverick+Gemini 2.5 Pro+DeepSeek-R1+
Mistral Large 2+