Mistral Magistral Small 2509 vs Nemotron 4 340B
Mistral Magistral Small 2509 (2025) and Nemotron 4 340B (2025) are compact production models from MistralAI and NVIDIA AI. Mistral Magistral Small 2509 ships a not-yet-sourced context window, while Nemotron 4 340B ships a 4k-token context window. On pricing, Mistral Magistral Small 2509 costs $0.50/1M input tokens versus $4.20/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Mistral Magistral Small 2509 is ~740% cheaper at $0.50/1M; pay for Nemotron 4 340B only for provider fit.
Decision scorecard
Local evidence first| Signal | Mistral Magistral Small 2509 | Nemotron 4 340B |
|---|---|---|
| Best for | provider-routed production | provider-routed production |
| Decision fit | General | Classification and JSON / Tool use |
| Context window | — | 4k |
| Cheapest output | $1.50/1M tokens | $4.20/1M tokens |
| Provider routes | 2 tracked | 2 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Mistral Magistral Small 2509 has the lower cheapest tracked output price at $1.50/1M tokens.
- Nemotron 4 340B has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Nemotron 4 340B uniquely exposes Structured outputs in local model data.
- Local decision data tags Nemotron 4 340B for Classification and JSON / Tool use.
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 4 340B
$4,410
Cheapest tracked route/tier: DeepInfra
Estimated monthly gap: $3,635. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Mistral Magistral Small 2509 and Nemotron 4 340B; plan for SDK, billing, or endpoint changes.
- Nemotron 4 340B is $2.70/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Nemotron 4 340B adds Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Nemotron 4 340B and Mistral Magistral Small 2509; plan for SDK, billing, or endpoint changes.
- Mistral Magistral Small 2509 is $2.70/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Structured outputs before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-09-01 | 2025-02-27 |
| Context window | — | 4k |
| Parameters | 24B | 340B |
| Architecture | - | decoder only |
| License | Apache 2.0(OSI) | NVIDIA Open Model |
| Openness | Open source | Open weights |
| Commercial use | Commercial use allowed | Commercial use allowed |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Mistral Magistral Small 2509 | Nemotron 4 340B |
|---|---|---|
| Input price | $0.50/1M tokens | $4.20/1M tokens |
| Output price | $1.50/1M tokens | $4.20/1M tokens |
| Providers |
Capabilities
| Capability | Mistral Magistral Small 2509 | Nemotron 4 340B |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | Yes |
| 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 structured outputs: Nemotron 4 340B. 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.
For cost, Mistral Magistral Small 2509 lists $0.50/1M input and $1.50/1M output tokens on the cheapest tracked provider, while Nemotron 4 340B lists $4.20/1M input and $4.20/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Mistral Magistral Small 2509 lower by about $3.40 per million blended tokens. Availability is 2 providers versus 2, so concentration risk also matters.
Choose Mistral Magistral Small 2509 when provider fit and lower input-token cost are central to the workload. Choose Nemotron 4 340B 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.
FAQ
Which is cheaper, Mistral Magistral Small 2509 or Nemotron 4 340B?
Mistral Magistral Small 2509 is cheaper on tracked token pricing. Mistral Magistral Small 2509 costs $0.50/1M input and $1.50/1M output tokens. Nemotron 4 340B costs $4.20/1M input and $4.20/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Mistral Magistral Small 2509 or Nemotron 4 340B open source?
Mistral Magistral Small 2509 is listed under Apache 2.0. Nemotron 4 340B is listed under NVIDIA Open Model. 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 structured outputs, Mistral Magistral Small 2509 or Nemotron 4 340B?
Nemotron 4 340B has the clearer documented structured outputs signal in this comparison. If structured outputs 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 4 340B?
Mistral Magistral Small 2509 is available on AWS Bedrock and Vercel AI Gateway. Nemotron 4 340B is available on NVIDIA NIM and DeepInfra. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Mistral Magistral Small 2509 over Nemotron 4 340B?
Mistral Magistral Small 2509 is ~740% cheaper at $0.50/1M; pay for Nemotron 4 340B only for provider fit. 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 4 340B.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.