GPT-5.1 Codex mini vs Qwen3 Coder Flash vs Mistral Large 3
GPT-5.1 Codex mini comes out ahead, 59 to 50 and 50 on our weighted score, though Qwen3 Coder Flash is 13% cheaper per token.
- Our pick
OpenAIGPT-5.1 Codex mini
59/100- ECI—
- Price$0.25 / $2.00
- Context400K
Alibaba (Qwen)Qwen3 Coder Flash
50/100- ECI—
- Price$0.30 / $1.50
- Context1M
Mistral AIMistral Large 3
50/100- ECI—
- Price$0.50 / $1.50
- Context262K
GPT-5.1 Codex mini is our pick
GPT-5.1 Codex mini is the better all-round choice, scoring 59/100 against Mistral Large 3 (50) and Qwen3 Coder Flash (50). It leads on inputs & features. Qwen3 Coder Flash wins on price and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceQwen3 Coder FlashQwen3 Coder Flash $0.60 · GPT-5.1 Codex mini $0.688 · Mistral Large 3 $0.75 per 1M tokens (3:1 blend)
- Longest contextQwen3 Coder FlashQwen3 Coder Flash 1,000,000 · GPT-5.1 Codex mini 400,000 · Mistral Large 3 262,144 tokens
- Widest inputsGPT-5.1 Codex mini and Mistral Large 3GPT-5.1 Codex mini: Text, Images · Qwen3 Coder Flash: Text · Mistral Large 3: Text, Images
- Self-hostingMistral Large 3Publishes downloadable weights
| Measure | Weight | GPT-5.1 Codex mini | Qwen3 Coder Flash | Mistral Large 3 |
|---|---|---|---|---|
| Price | 50% | 58 | 60 | 56 |
| Inputs & features | 30% | 70 | 25 | 50 |
| Context window | 20% | 44 | 60 | 37 |
| Overall | 100% | 59/100 | 50/100 | 50/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | GPT-5.1 Codex miniOpenAI | Qwen3 Coder FlashAlibaba (Qwen) | Mistral Large 3Mistral AI |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.25 (best) | $0.30 | $0.50 |
| Output | $2.00 | $1.50 (best) | $1.50 (best) |
| Cached input | — | — | $0.05 |
| Blended (3:1) | $0.688 | $0.60 (best) | $0.75 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Median of 10 providers | Official Alibaba API | Official Mistral API |
| Limits | |||
| Context window | 400,000 tokens | 1,000,000 tokens (best) | 262,144 tokens |
| Max output | 128,000 tokens | 65,536 tokens | 262,144 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | No | Yes |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | Yes | No | No |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | No | No |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | — | qwen3-coder-flash | mistral-large-2512 |
| API providers | 10 | 10 | 13 (best) |
| Released | Nov 13, 2025 | Jul 28, 2025 | Dec 2, 2025 |
| Knowledge cutoff | Sep 30, 2024 | Apr 2025 | Nov 2024 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- GPT-5.1 Codex mini$6.50
- Qwen3 Coder Flash$6.00
- Mistral Large 3$8.00
Which should you choose?
Which is better: GPT-5.1 Codex mini, Qwen3 Coder Flash or Mistral Large 3?
GPT-5.1 Codex mini is the better all-round choice, scoring 59/100 against Mistral Large 3 (50) and Qwen3 Coder Flash (50). It leads on inputs & features. Qwen3 Coder Flash wins on price and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, GPT-5.1 Codex mini, Qwen3 Coder Flash or Mistral Large 3?
Qwen3 Coder Flash is cheaper at $0.30 input / $1.50 output per million tokens (official Alibaba API price). GPT-5.1 Codex mini costs $0.25 input / $2.00 output per million tokens (median across 10 API providers); Mistral Large 3 costs $0.50 input / $1.50 output per million tokens (official Mistral API price). At a typical mix of three input tokens to one output token, that is $0.60 per million tokens for Qwen3 Coder Flash versus $0.688 for GPT-5.1 Codex mini (1.1× as much) and $0.75 for Mistral Large 3 (1.3× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. GPT-5.1 Codex mini has not been scored yet, Qwen3 Coder Flash has not been scored yet and Mistral Large 3 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for GPT-5.1 Codex mini, Qwen3 Coder Flash and Mistral Large 3 yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
Qwen3 Coder Flash has the largest context window at 1,000,000 tokens, against 400,000 for GPT-5.1 Codex mini and 262,144 for Mistral Large 3. Maximum output per response: GPT-5.1 Codex mini up to 128,000, Qwen3 Coder Flash up to 65,536, Mistral Large 3 up to 262,144 tokens.
Which can read images, PDFs, audio or video?
GPT-5.1 Codex mini accepts text and images; Qwen3 Coder Flash accepts text; Mistral Large 3 accepts text and images. GPT-5.1 Codex mini handles the widest range of inputs.
Are any of these open source?
Mistral Large 3 publishes its weights and can be self-hosted; GPT-5.1 Codex mini and Qwen3 Coder Flash is proprietary.
Which is newer?
Mistral Large 3 is the newest, released Dec 2, 2025. GPT-5.1 Codex mini came out Nov 13, 2025; Qwen3 Coder Flash came out Jul 28, 2025. Knowledge cutoff: GPT-5.1 Codex mini Sep 30, 2024, Qwen3 Coder Flash Apr 2025, Mistral Large 3 Nov 2024.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
