OpenAI: GPT-5 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: GPT-5 Pro model details · GPT-5 family · OpenAI provider page
Top 15 alternatives
| # | Model | Provider | Why | Context | Input price / 1M | Compare |
|---|---|---|---|---|---|---|
| 1 | Anthropic: Claude Opus 4.1 | Anthropic | shares reasoning, tool-use, structured-output, vision · similar price tier | 200K Long context (128K+) | $15.00 Premium | vs → |
| 2 | Anthropic: Claude Opus 4.5 | Anthropic | shares reasoning, tool-use, structured-output, vision · similar price tier | 200K Long context (128K+) | $5.00 Standard | vs → |
| 3 | Anthropic: Claude Opus 4.6 | Anthropic | shares reasoning, tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $5.00 Standard | vs → |
| 4 | Anthropic: Claude Haiku 4.5 | Anthropic | shares reasoning, tool-use, structured-output, vision · similar context window | 200K Long context (128K+) | $1.00 Standard | vs → |
| 5 | Mistral: Mistral Small 4 | Mistral AI | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.15 Budget | vs → |
| 6 | Qwen: Qwen3.5 397B A17B | Qwen | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.39 Budget | vs → |
| 7 | Qwen: Qwen3.5-122B-A10B | Qwen | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.26 Budget | vs → |
| 8 | Qwen: Qwen3.5-27B | Qwen | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.20 Budget | vs → |
| 9 | Qwen: Qwen3.5-35B-A3B | Qwen | shares reasoning, tool-use, structured-output, vision · similar context window | 262K Long context (128K+) | $0.16 Budget | vs → |
| 10 | Qwen: Qwen3.5-9B | Qwen | shares reasoning, tool-use, structured-output, vision · similar context window | 256K Long context (128K+) | $0.05 Budget | vs → |
| 11 | xAI: Grok 4 | X Ai | shares reasoning, tool-use, structured-output, vision · similar context window | 256K Long context (128K+) | $3.00 Standard | vs → |
| 12 | OpenAI: o1 | OpenAI | shares reasoning, tool-use, structured-output, vision · similar price tier | 200K Long context (128K+) | $15.00 Premium | vs → |
| 13 | OpenAI: o3 Deep Research | OpenAI | shares reasoning, tool-use, structured-output, vision · similar price tier | 200K Long context (128K+) | $10.00 Premium | vs → |
| 14 | Anthropic: Claude Opus 4 | Anthropic | shares reasoning, tool-use, vision · similar price tier | 200K Long context (128K+) | $15.00 Premium | vs → |
| 15 | OpenAI: GPT-5 Image | OpenAI | shares reasoning, tool-use, structured-output, vision · similar price tier | 400K Long context (128K+) | $10.00 Premium | vs → |