Compare models
Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
 o3OpenAI |  DeepSeek-R1DeepSeek | DeepSeek-V4-Pro DeepSeek | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | DeepSeek | OpenAI |
| Family | o-series | DeepSeek | DeepSeek | GPT |
| Release date | 2025-04-16 | 2025-01-20 | 2026-04-22 | 2025-08-07 |
| Context window | 200,000 tokens | 128,000 tokens | 1,000,000 tokens | 400,000 tokens |
| Parameters | — | 671B | 1.6T (49B active) | — |
| Modality | text, vision | text | text | text, vision, audio |
| License | proprietary | MIT | MIT | proprietary |
| Source | proprietary | open weights | open weights | proprietary |
| Description | Reasoning-focused model in the o-series. | Reasoning-focused open-weight model. | DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
| Links |
Add a model
Gemini 2.5 Flashmax
Claude 4.6 SonnetmaxGPT-5.5maxDeepSeek-V4-Flashmax
Qwen3.6-27BmaxGemini 3 PromaxDeepSeek-V4-Pro✓Claude 4.7 OpusmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5✓
Grok 4maxQwen3 235Bmaxo3✓GPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1✓
Mistral Large 2maxMax 4 models. Remove one to add another.