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Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
 o3OpenAI | GPT-4.1 OpenAI | GPT-5 OpenAI |  Claude 4.5 HaikuAnthropic | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | OpenAI | Anthropic |
| Family | o-series | GPT | GPT | Claude |
| Release date | 2025-04-16 | 2025-04-14 | 2025-08-07 | 2025-10-01 |
| Context window | 200,000 tokens | 1,000,000 tokens | 400,000 tokens | 200,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision | text, vision | text, vision, audio | text, vision |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Reasoning-focused model in the o-series. | — | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Fast, cost-effective Claude model. |
| Links |
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Gemini 2.5 FlashmaxClaude 4.6 SonnetmaxGPT-5.5max
DeepSeek-V4-Flashmax
Qwen3.6-27BmaxGemini 3 PromaxDeepSeek-V4-PromaxClaude 4.7 OpusmaxClaude 4.5 Haiku✓DeepSeek-V3.1maxGPT-5✓
Grok 4maxQwen3 235Bmaxo3✓GPT-4.1✓
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.