OpenAI: GPT-5.1 Chat 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-5.1 Chat model details · GPT-5 family · OpenAI provider page
Top 15 alternatives
| # | Model | Provider | Why | Context | Input price / 1M | Compare |
|---|---|---|---|---|---|---|
| 1 | Google: Nano Banana Pro (Gemini 3 Pro Image) | shares tool-use, structured-output, vision · similar price tier | 131K Long context (128K+) | $2.00 Standard | vs → | |
| 2 | Mistral: Pixtral Large 2411 | Mistral AI | shares tool-use, structured-output, vision · similar price tier | 131K Long context (128K+) | $2.00 Standard | vs → |
| 3 | Qwen: Qwen VL Max | Qwen | shares tool-use, structured-output, vision · similar price tier | 131K Long context (128K+) | $0.52 Budget | vs → |
| 4 | Anthropic: Claude Haiku 4.5 | Anthropic | shares tool-use, structured-output, vision · similar price tier | 200K Long context (128K+) | $1.00 Standard | vs → |
| 5 | Anthropic: Claude Haiku 4.5 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 200K Long context (128K+) | $0.50 Budget | vs → |
| 6 | Anthropic: Claude Opus 4.5 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 200K Long context (128K+) | $2.50 Standard | vs → |
| 7 | Anthropic: Claude Opus 4.6 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $2.50 Standard | vs → |
| 8 | Anthropic: Claude Opus 4.7 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $2.50 Standard | vs → |
| 9 | Anthropic: Claude Opus 4.8 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $2.50 Standard | vs → |
| 10 | Anthropic: Claude Sonnet 4.5 | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $3.00 Standard | vs → |
| 11 | Anthropic: Claude Sonnet 4.5 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $1.50 Standard | vs → |
| 12 | Anthropic: Claude Sonnet 4.6 | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $3.00 Standard | vs → |
| 13 | Anthropic: Claude Sonnet 4.6 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $1.50 Standard | vs → |
| 14 | Anthropic: Claude Sonnet 5 | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $2.00 Standard | vs → |
| 15 | Anthropic: Claude Sonnet 5 (batch) | Anthropic | shares tool-use, structured-output, vision · similar price tier | 1M Ultra context (1M+) | $1.00 Standard | vs → |
Cheaper alternatives to OpenAI: GPT-5.1 Chat
Larger-context alternatives
Google: Nano Banana Pro (Gemini 3 Pro Image) — 131KMistral: Pixtral Large 2411 — 131KQwen: Qwen VL Max — 131KAnthropic: Claude Haiku 4.5 — 200KAnthropic: Claude Haiku 4.5 (batch) — 200KAnthropic: Claude Opus 4.5 (batch) — 200KAnthropic: Claude Opus 4.6 (batch) — 1MAnthropic: Claude Opus 4.7 (batch) — 1M