OpenAI: o3 Pro alternatives
Ranked by capability overlap, similar context window, and similar price tier. Cross-vendor options are weighted higher than same-provider alternatives.
See also: OpenAI: o3 Pro model details · OpenAI o-series (reasoning) · OpenAI provider page
Top 15 alternatives
| # | Model | Provider | Why | Context | Input price / 1M | Compare |
|---|---|---|---|---|---|---|
| 1 | Anthropic: Claude Opus 4.7 (Fast) | Anthropic | shares reasoning, tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $30.00 Premium | vs → |
| 2 | Anthropic: Claude Haiku 4.5 | Anthropic | shares reasoning, tool-use, structured-output, vision · similar context window | 200K Long context (128K+) | $1.00 Standard | vs → |
| 3 | Anthropic: Claude Haiku 4.5 (batch) | Anthropic | shares reasoning, tool-use, structured-output, vision · similar context window | 200K Long context (128K+) | $0.50 Budget | vs → |
| 4 | Anthropic: Claude Opus 4.1 (batch) | Anthropic | shares reasoning, tool-use, structured-output, vision · similar context window | 200K Long context (128K+) | $7.50 Premium | vs → |
| 5 | Anthropic: Claude Opus 4.5 | Anthropic | shares reasoning, tool-use, structured-output, vision · similar context window | 200K Long context (128K+) | $5.00 Standard | vs → |
| 6 | Anthropic: Claude Opus 4.5 (batch) | Anthropic | shares reasoning, tool-use, structured-output, vision · similar context window | 200K Long context (128K+) | $2.50 Standard | vs → |
| 7 | Google: Gemma 4 26B A4B | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.09 Budget | vs → | |
| 8 | Google: Gemma 4 31B | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.09 Budget | vs → | |
| 9 | Google: Gemma 4 31B (batch) | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.39 Budget | vs → | |
| 10 | Mistral: Mistral Medium 3.5 | Mistral AI | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $1.50 Standard | vs → |
| 11 | Mistral: Mistral Medium 3.5 (batch) | Mistral AI | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.75 Budget | vs → |
| 12 | Mistral: Mistral Small 4 | Mistral AI | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.15 Budget | vs → |
| 13 | Mistral: Mistral Small 4 (batch) | Mistral AI | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.07 Budget | vs → |
| 14 | Qwen: Qwen3 VL 30B A3B Thinking | Qwen | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.20 Budget | vs → |
| 15 | Qwen: Qwen3.5 397B A17B | Qwen | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.55 Budget | vs → |