Mistral Nemo vs o3
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
Updated
Mistral Nemo specs · o3 specs- Priceo3
o3 publishes pricing ($8.00 / 1M output tokens) while Mistral Nemo does not.
- Context windowo3
o3 accepts 200K tokens vs 128K, 1.6× the room for long documents and codebases.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- Modalitieso3
o3 supports 2 modalities (text, vision) vs 1 for Mistral Nemo.
- OpennessMistral Nemo
Mistral Nemo ships open weights (Apache-2.0); o3 is API-only.
On balance o3 edges ahead, winning 3 of 5 categories against Mistral Nemo's 1. o3 publishes pricing ($8.00 / 1M output tokens) while Mistral Nemo does not. o3 accepts 200K tokens vs 128K, 1.6× the room for long documents and codebases.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, Mistral Nemo handles text while o3 handles text, vision, which can be the deciding factor before you even look at benchmarks. Mistral Nemo ships open weights (Apache-2.0); o3 is API-only.
o3 is the newer of the two, released 9 months after Mistral Nemo, which usually means a more recent knowledge cutoff and updated safety post-training. Mistral Nemo is usually picked for edge deployment and local llm workloads, while o3 sees more deployments in reasoning and math. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | Mistral Nemo | o3 |
|---|---|---|
| Provider | Mistral | OpenAI |
| Released | Jul 2024 | Apr 2025 |
| Modalities | text | text, vision |
| Context window | 128K tokens | 200K tokens |
| Max output | , | , |
| Input · 1M | Pricing not published | $2.00 / 1M tokens |
| Output · 1M | Pricing not published | $8.00 / 1M tokens |
| Knowledge cutoff | , | 2024-06 |
| Open weights | Yes (Apache-2.0) | No |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day, vs $18.00
- Heavy usage, 1M in / 500k out per day, vs $180
- RAG workload, 5M in / 200k out per day, vs $348
Light usage, 100k in / 50k out per day: pricing not directly comparable (one or both models are missing public per-token rates). Heavy usage, 1M in / 500k out per day: pricing not directly comparable (one or both models are missing public per-token rates). RAG workload, 5M in / 200k out per day: pricing not directly comparable (one or both models are missing public per-token rates).
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- Mistral NemoPricing unavailable
- o3$0.600
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
- HumanEval,95.0
- GPQA,87.7
Mistral Nemo fits when…
- Apache-2.0
- Single-GPU fit
- Multilingual
- Self-hosting and on-prem requirements, open weights (Apache-2.0).
o3 fits when…
- Industry-leading reasoning depth at launch
- Strong on math, science, and abstract puzzles
- Tool-use during reasoning loops
- Long-context tasks, handles 200K tokens vs 128K for Mistral Nemo.
- Multimodal needs covering vision.
Consider Mistral Large 2
Mistral's flagship API model, strong on code and reasoning, EU-friendly hosting.
Frequently asked
Is Mistral Nemo or o3 cheaper?
Per-token pricing isn't published for at least one of these models, check each model's spec page for current rates.Which has the larger context window?
o3 accepts 200K tokens vs 128K for Mistral Nemo.Is Mistral Nemo or o3 better for coding?
Both Mistral Nemo and o3 are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Mistral Nemo ships open weights (Apache-2.0). o3 is API-only.When were Mistral Nemo and o3 released?
Mistral Nemo was released by Mistral on 2024-07-18. o3 was released by OpenAI on 2025-04-16.
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