Alternatives · 15 models compared · checked 17 Aug 2026
GPT-5.1 alternatives: 15 models in or near grid E4
The closest model to GPT-5.1 on the atlas is GPT-5, in the same square, at $1.25 per 1M input tokens against GPT-5.1’s . 5 of the 15 nearest models are cheaper on input; the cheapest is Qwen3 Coder 480B A35B at $0.30. We rank by position on the atlas, not by capability, because we hold no capability data.
$1.25
observed We measured
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- Retrieved
- 17 Aug 2026
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ModelsAtlas. “GPT-5.1 alternatives: 15 models in or near grid E4”. Retrieved 17 Aug 2026. https://modelsatlas.com/models/openai/gpt-5-1/alternatives
Where the alternatives sit
Each square is a price band (A–H) × a context band (1–6). How the grid works
Same squareGRIDE410 modelsGPT-5, GPT-5.1-Codex, GPT-5.2 and 7 more
GPT-5.1Its 15 nearest modelsOther modelsOpen weights
View the map as a table (3 squares)
| Square | Price band | Context band | Models |
|---|---|---|---|
| GRIDD4 | $0.30–1 | 256K–1M | Qwen3 Coder 480B A35B, Qwen3.6 27B, Devstral 2 2512, Qwen3.5 397B A17B |
| GRIDE3 | $1–3 | 128–256K | Claude Haiku 4.5 |
| GRIDE4 | $1–3 | 256K–1M | GPT-5.1, GPT-5, GPT-5.1-Codex, Mistral Medium 3.5, GPT-5.2, GPT-5.2-Codex, GPT-5.3-Codex, Grok 4.5, Grok 4.6, Grok 4.7, Mistral Large 3 2512 |
Top 15 alternatives
Ranked by steps away on the atlas, then cheaper before pricier, then input price
| # | Model | Grid | Why it fits | Input / 1M | vs GPT-5.1 | Output / 1M | Context | |
|---|---|---|---|---|---|---|---|---|
| — | GPT-5.1OpenAI · the model you’re replacing | GRIDE4 | Baseline | $1.25 | — | $10.00 | 400K | |
| 1 | GPT-5OpenAI | GRIDE4 | Same maker, same square, same input price | $1.25 | same | $10.00 | 400K | Compare → |
| 2 | GPT-5.1-CodexOpenAI | GRIDE4 | Same maker, same square, same input price | $1.25 | same | $10.00 | 400K | Compare → |
| 3 | Mistral Medium 3.5Mistral AI | GRIDE4 | Same square, 20% pricier input | $1.50 | +20% | $7.50 | 262K | Compare → |
| 4 | GPT-5.2OpenAI | GRIDE4 | Same maker, same square, 40% pricier input | $1.75 | +40% | $14.00 | 400K | Compare → |
| 5 | GPT-5.2-CodexOpenAI | GRIDE4 | Same maker, same square, 40% pricier input | $1.75 | +40% | $14.00 | 400K | Compare → |
| 6 | GPT-5.3-CodexOpenAI | GRIDE4 | Same maker, same square, 40% pricier input | $1.75 | +40% | $14.00 | 400K | Compare → |
| 7 | Grok 4.5xAI | GRIDE4 | Same square, 60% pricier input, 1.3× the context | $2.00 | +60% | $6.00 | 500K | |
| 8 | Grok 4.6xAI | GRIDE4 | Same square, 60% pricier input, 1.3× the context | $2.00 | +60% | $6.00 | 500K | |
| 9 | Grok 4.7xAI | GRIDE4 | Same square, 60% pricier input, 1.3× the context | $2.00 | +60% | $6.00 | 500K | |
| 10 | Mistral Large 3 2512Mistral AI | GRIDE4 | Same square, 60% pricier input | $2.00 | +60% | $6.00 | 262K | |
| 11 | Qwen3 Coder 480B A35BQwen (Alibaba) | GRIDD4 | Neighbouring square D4, 76% cheaper input | $0.30 | −76% | $1.00 | 262K | |
| 12 | Qwen3.6 27BQwen (Alibaba) · open weights | GRIDD4 | Neighbouring square D4, 74% cheaper input, open weights | $0.32 | −74% | $3.20 | 262K | |
| 13 | Devstral 2 2512Mistral AI | GRIDD4 | Neighbouring square D4, 68% cheaper input | $0.40 | −68% | $2.00 | 262K | |
| 14 | Qwen3.5 397B A17BQwen (Alibaba) | GRIDD4 | Neighbouring square D4, 56% cheaper input | $0.55 | −56% | $3.50 | 262K | |
| 15 | Claude Haiku 4.5Anthropic | GRIDE3 | Neighbouring square E3, 20% cheaper input | $1.00 | −20% | $5.00 | 200K |
What switching saves
3,000 input + 800 output tokens × 1,000 requests a day
Σ Derived from standard-tier prices; excludes caching and batch discounts. Use your own numbers →
Larger-context alternatives
| Model | Input / 1M | Context | |
|---|---|---|---|
| Grok 4.5xAI | $2.00 | 500K | |
| Grok 4.6xAI | $2.00 | 500K | |
| Grok 4.7xAI | $2.00 | 500K | |
| Gemini 2.5 Pro Preview 06-05Google | $1.25 | 1.05M | |
| Grok 4.3xAI | $1.25 | 1M |
Free alternatives
| Model | Input / 1M | Context | |
|---|---|---|---|
| Lyria 3 Clip PreviewGoogle | Free | 1.05M | |
| Lyria 3 Pro PreviewGoogle | Free | 1.05M |
Compare GPT-5.1 head to head
Questions
What is the best alternative to GPT-5.1?
GPT-5 ranks first: same maker, same square, same input price. Input is $1.25 per 1M tokens against $1.25 for GPT-5.1. Ranking is by position on the atlas, not by quality.
What is the cheapest alternative to GPT-5.1?
Qwen3 Coder 480B A35B at $0.30 per 1M input tokens, 76% less than GPT-5.1, among the 15 closest.
Is there an open-weight alternative to GPT-5.1?
Yes, 1 of the 15: Qwen3.6 27B.
Which alternative has a larger context window?
Grok 4.5, Grok 4.6 and Grok 4.7 hold more than GPT-5.1's 400K; the largest is Grok 4.5 at 500K.
How are alternatives ranked?
By distance on the atlas grid from GPT-5.1's square E4: the same square first, then neighbouring squares. Within the same distance, cheaper models come before pricier ones, then the lowest input price wins. We hold no capability data, so we do not claim a model can do what GPT-5.1 does, only that it costs and holds about the same. No vendor pays for position.
More alternatives
Keep going in your AI
Opens with this page as the source. We add nothing else to the prompt.
- What is the best alternative to GPT-5.1?
- What is the cheapest alternative to GPT-5.1?
- Is there an open-weight alternative to GPT-5.1?