Mistral Magistral Small 2509 vs Nemotron 3 Nano Omni
Mistral Magistral Small 2509 (2025) and Nemotron 3 Nano Omni (2026) are general-purpose language models from MistralAI and NVIDIA AI. Mistral Magistral Small 2509 ships a not-yet-sourced context window, while Nemotron 3 Nano Omni ships a 262k-token context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Nemotron 3 Nano Omni is safer overall; choose Mistral Magistral Small 2509 when provider fit matters.
Decision scorecard
Local evidence first| Signal | Mistral Magistral Small 2509 | Nemotron 3 Nano Omni |
|---|---|---|
| Best for | provider-routed production | multimodal apps |
| Decision fit | General | Long context, Vision, and Classification |
| Context window | — | 262k |
| Cheapest output | $1.50/1M tokens | - |
| Provider routes | 2 tracked | 1 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Mistral Magistral Small 2509 has broader tracked provider coverage for fallback and procurement flexibility.
- Nemotron 3 Nano Omni has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Nemotron 3 Nano Omni uniquely exposes Multimodal in local model data.
- Local decision data tags Nemotron 3 Nano Omni for Long context, Vision, and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Mistral Magistral Small 2509
$775
Cheapest tracked route/tier: AWS Bedrock
Nemotron 3 Nano Omni
Unavailable
No complete token price in local provider data
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Mistral Magistral Small 2509 and Nemotron 3 Nano Omni; plan for SDK, billing, or endpoint changes.
- Nemotron 3 Nano Omni adds Multimodal in local capability data.
- No overlapping tracked provider route is sourced for Nemotron 3 Nano Omni and Mistral Magistral Small 2509; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Multimodal before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-09-01 | 2026-04-28 |
| Context window | — | 262k |
| Parameters | 24B | 30B |
| Architecture | - | Hybrid Mamba-Transformer MoE |
| License | Proprietary | Open Source |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Mistral Magistral Small 2509 | Nemotron 3 Nano Omni |
|---|---|---|
| Input price | $0.50/1M tokens | - |
| Output price | $1.50/1M tokens | - |
| Providers |
Capabilities
| Capability | Mistral Magistral Small 2509 | Nemotron 3 Nano Omni |
|---|---|---|
| Vision | No | No |
| Multimodal | No | Yes |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on multimodal input: Nemotron 3 Nano Omni. Both models share the core language-model surface, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
Pricing coverage is uneven: Mistral Magistral Small 2509 has $0.50/1M input tokens and Nemotron 3 Nano Omni has no token price sourced yet. Provider availability is 2 tracked routes versus 1. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Mistral Magistral Small 2509 when provider fit and broader provider choice are central to the workload. Choose Nemotron 3 Nano Omni when provider fit are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency. For teams standardizing a stack, that distinction is often the difference between a benchmark win and a reliable deployment.
FAQ
Is Mistral Magistral Small 2509 or Nemotron 3 Nano Omni open source?
Mistral Magistral Small 2509 is listed under Proprietary. Nemotron 3 Nano Omni is listed under Open Source. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for multimodal input, Mistral Magistral Small 2509 or Nemotron 3 Nano Omni?
Nemotron 3 Nano Omni has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Mistral Magistral Small 2509 and Nemotron 3 Nano Omni?
Mistral Magistral Small 2509 is available on AWS Bedrock and Vercel AI Gateway. Nemotron 3 Nano Omni is available on OpenRouter. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Mistral Magistral Small 2509 over Nemotron 3 Nano Omni?
Nemotron 3 Nano Omni is safer overall; choose Mistral Magistral Small 2509 when provider fit matters. If your workload also depends on provider fit, start with Mistral Magistral Small 2509; if it depends on provider fit, run the same evaluation with Nemotron 3 Nano Omni.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.