OpenAI: o3 Mini 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 Mini model details · OpenAI o-series (reasoning) · OpenAI provider page
Top 15 alternatives
| # | Model | Provider | Why | Context | Input price / 1M | Compare |
|---|---|---|---|---|---|---|
| 1 | Anthropic: Claude Haiku 4.5 | Anthropic | shares reasoning, tool-use, structured-output · similar price tier | 200K Long context (128K+) | $1.00 Standard | vs → |
| 2 | Anthropic: Claude Haiku 4.5 (batch) | Anthropic | shares reasoning, tool-use, structured-output · similar price tier | 200K Long context (128K+) | $0.50 Budget | vs → |
| 3 | Anthropic: Claude Opus 4.5 (batch) | Anthropic | shares reasoning, tool-use, structured-output · similar price tier | 200K Long context (128K+) | $2.50 Standard | vs → |
| 4 | Mistral: Mistral Medium 3.5 | Mistral AI | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $1.50 Standard | vs → |
| 5 | Mistral: Mistral Medium 3.5 (batch) | Mistral AI | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $0.75 Budget | vs → |
| 6 | Qwen: Qwen3 Max Thinking | Qwen | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $0.78 Budget | vs → |
| 7 | Qwen: Qwen3.5 397B A17B | Qwen | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $0.55 Budget | vs → |
| 8 | Qwen: Qwen3.6 Max Preview | Qwen | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $1.03 Standard | vs → |
| 9 | SpaceXAI: Grok 4.5 | X Ai | shares reasoning, tool-use, structured-output · similar price tier | 500K Long context (128K+) | $2.00 Standard | vs → |
| 10 | SpaceXAI: Grok 4.6 | X Ai | shares reasoning, tool-use, structured-output · similar price tier | 500K Long context (128K+) | $2.00 Standard | vs → |
| 11 | SpaceXAI: Grok Build 0.1 | X Ai | shares reasoning, tool-use, structured-output · similar price tier | 256K Long context (128K+) | $1.00 Standard | vs → |
| 12 | xAI: Grok 4 | X Ai | shares reasoning, tool-use, structured-output · similar price tier | 256K Long context (128K+) | $3.00 Standard | vs → |
| 13 | ByteDance Seed: Seed 2.1 Turbo | Bytedance Seed | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $0.50 Budget | vs → |
| 14 | ByteDance Seed: Seed-2.0-Code | Bytedance Seed | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $0.50 Budget | vs → |
| 15 | MoonshotAI: Kimi K2 Thinking | Moonshotai | shares reasoning, tool-use, structured-output · similar price tier | 262K Long context (128K+) | $0.60 Budget | vs → |