Devstral 2 vs GPT-5.1 Codex mini vs Nova 2 Lite
Nova 2 Lite comes out ahead, 62 to 59 and 42 on our weighted score, though GPT-5.1 Codex mini is 26% cheaper per token.
Mistral AIDevstral 2
42/100- ECI—
- Price$0.40 / $2.00
- Context262K
OpenAIGPT-5.1 Codex mini
59/100- ECI—
- Price$0.25 / $2.00
- Context400K
- Our pick
AmazonNova 2 Lite
62/100- ECI—
- Price$0.33 / $2.75
- Context1M
Nova 2 Lite is our pick
Nova 2 Lite is the better all-round choice, scoring 62/100 against GPT-5.1 Codex mini (59) and Devstral 2 (42). It leads on inputs & features and context window. GPT-5.1 Codex mini wins on price. 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 priceGPT-5.1 Codex miniGPT-5.1 Codex mini $0.688 · Devstral 2 $0.80 · Nova 2 Lite $0.935 per 1M tokens (3:1 blend)
- Longest contextNova 2 LiteNova 2 Lite 1,000,000 · GPT-5.1 Codex mini 400,000 · Devstral 2 262,144 tokens
- Widest inputsNova 2 LiteDevstral 2: Text · GPT-5.1 Codex mini: Text, Images · Nova 2 Lite: Text, Images, PDFs, Video
- Self-hostingDevstral 2Publishes downloadable weights
| Measure | Weight | Devstral 2 | GPT-5.1 Codex mini | Nova 2 Lite |
|---|---|---|---|---|
| Price | 50% | 54 | 58 | 51 |
| Inputs & features | 30% | 25 | 70 | 80 |
| Context window | 20% | 37 | 44 | 60 |
| Overall | 100% | 42/100 | 59/100 | 62/100 |
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 | Devstral 2Mistral AI | GPT-5.1 Codex miniOpenAI | Nova 2 LiteAmazon |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.40 | $0.25 (best) | $0.33 |
| Output | $2.00 (best) | $2.00 (best) | $2.75 |
| Cached input | — | — | $0.083 |
| Blended (3:1) | $0.80 | $0.688 (best) | $0.935 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Mistral API | Median of 10 providers | Official Amazon Bedrock API |
| Limits | |||
| Context window | 262,144 tokens | 400,000 tokens | 1,000,000 tokens (best) |
| Max output | 262,144 tokens (best) | 128,000 tokens | 65,536 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | Yes | Yes |
| PDFs | No | No | Yes |
| Audio | No | No | No |
| Video | No | No | Yes |
| Reasoning | No | Yes | Yeslow · medium · high |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | Yes | No |
| Availability | |||
| Weights | Open | Proprietary | Proprietary |
| API model ID | devstral-2512 | — | amazon.nova-2-lite-v1:0 |
| API providers | 14 (best) | 10 | 2 |
| Released | Dec 9, 2025 | Nov 13, 2025 | Dec 2, 2025 |
| Knowledge cutoff | Dec 2025 | Sep 30, 2024 | Oct 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Devstral 2$8.00
- GPT-5.1 Codex mini$6.50
- Nova 2 Lite$8.80
Which should you choose?
Which is better: Devstral 2, GPT-5.1 Codex mini or Nova 2 Lite?
Nova 2 Lite is the better all-round choice, scoring 62/100 against GPT-5.1 Codex mini (59) and Devstral 2 (42). It leads on inputs & features and context window. GPT-5.1 Codex mini wins on price. 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, Devstral 2, GPT-5.1 Codex mini or Nova 2 Lite?
GPT-5.1 Codex mini is cheaper at $0.25 input / $2.00 output per million tokens (median across 10 API providers). Devstral 2 costs $0.40 input / $2.00 output per million tokens (official Mistral API price); Nova 2 Lite costs $0.33 input / $2.75 output per million tokens (official Amazon Bedrock API price). At a typical mix of three input tokens to one output token, that is $0.688 per million tokens for GPT-5.1 Codex mini versus $0.80 for Devstral 2 (1.2× as much) and $0.935 for Nova 2 Lite (1.4× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Devstral 2 has not been scored yet, GPT-5.1 Codex mini has not been scored yet and Nova 2 Lite has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Devstral 2, GPT-5.1 Codex mini and Nova 2 Lite 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?
Nova 2 Lite has the largest context window at 1,000,000 tokens, against 400,000 for GPT-5.1 Codex mini and 262,144 for Devstral 2. Maximum output per response: Devstral 2 up to 262,144, GPT-5.1 Codex mini up to 128,000, Nova 2 Lite up to 65,536 tokens.
Which can read images, PDFs, audio or video?
Devstral 2 accepts text; GPT-5.1 Codex mini accepts text and images; Nova 2 Lite accepts text, images, PDFs and video. Nova 2 Lite handles the widest range of inputs.
Are any of these open source?
Devstral 2 publishes its weights and can be self-hosted; GPT-5.1 Codex mini and Nova 2 Lite is proprietary.
Which is newer?
Devstral 2 is the newest, released Dec 9, 2025. Nova 2 Lite came out Dec 2, 2025; GPT-5.1 Codex mini came out Nov 13, 2025. Knowledge cutoff: Devstral 2 Dec 2025, GPT-5.1 Codex mini Sep 30, 2024, Nova 2 Lite Oct 2025.
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.
