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-5.6 SolOpenAI |  DeepSeek-R1DeepSeek | GPT-5 OpenAI | GPT-5 Pro OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | OpenAI | OpenAI |
| Family | GPT | DeepSeek | GPT | GPT |
| Release date | 2026-06-26 | 2025-01-20 | 2025-08-07 | 2025-08-07 |
| Context window | — | 128,000 tokens | 400,000 tokens | 400,000 tokens |
| Parameters | — | 671B | — | — |
| Modality | text, vision, audio | text | text, vision, audio | text, vision, audio |
| License | proprietary | MIT | proprietary | proprietary |
| Source | proprietary | open weights | 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. | Reasoning-focused open-weight model. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Higher-reasoning variant of GPT-5, used for harder scientific and research tasks (e.g., immunology breakthroughs at NIH). Same 400K context as GPT-5; trades latency for depth. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | — | 85.1% | — |
| GPQA-D | — | — | 87.3% | — |
| HumanEval | — | — | 95.2% | — |
| Aider | — | — | 85.4% | — |
| AIME-25 | — | 79.8% | 91.0% | — |
| LiveCB | — | — | 74.5% | — |
| MMMU | — | — | 74.1% | — |
Add a model
GPT-5.6 Sol✓
Claude 4.8 Opusmax
Qwen3.7-Maxmax
Gemini 3.5 FlashmaxGemini 3.5maxGemini OmnimaxGPT-5.5maxDeepSeek-V4-FlashmaxGemini 3 PromaxDeepSeek-V4-PromaxQwen3.6-27BmaxClaude 4.7 OpusmaxClaude 4.6 SonnetmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5 Pro✓GPT-5✓
Grok 4maxGemini 2.5 FlashmaxQwen3 235Bmaxo3maxGPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1✓
Mistral Large 2maxMax 4 models. Remove one to add another.