DeepSeek V3 0324 vs Mistral Magistral Small 2509
DeepSeek V3 0324 (2025) and Mistral Magistral Small 2509 (2025) are general-purpose language models from DeepSeek and MistralAI. DeepSeek V3 0324 ships a 160K-token context window, while Mistral Magistral Small 2509 ships a not-yet-sourced context window. On pricing, DeepSeek V3 0324 costs $0.27/1M input tokens versus $0.50/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
DeepSeek V3 0324 is ~85% cheaper at $0.27/1M; pay for Mistral Magistral Small 2509 only for provider fit.
Decision scorecard
Local evidence first| Signal | DeepSeek V3 0324 | Mistral Magistral Small 2509 |
|---|---|---|
| Best for | provider-routed production | provider-routed production |
| Decision fit | Coding, Agents, and Long context | General |
| Context window | 160K | — |
| Cheapest output | $1.12/1M tokens | $1.50/1M tokens |
| Provider routes | 3 tracked | 2 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- DeepSeek V3 0324 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- DeepSeek V3 0324 has the lower cheapest tracked output price at $1.12/1M tokens.
- DeepSeek V3 0324 has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags DeepSeek V3 0324 for Coding, Agents, and Long context.
- Use Mistral Magistral Small 2509 when your own prompt tests beat the comparison signals; the local data does not show a decisive standalone advantage yet.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
DeepSeek V3 0324
$496
Cheapest tracked route/tier: Novita AI
Mistral Magistral Small 2509
$775
Cheapest tracked route/tier: AWS Bedrock
Estimated monthly gap: $279. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for DeepSeek V3 0324 and Mistral Magistral Small 2509; plan for SDK, billing, or endpoint changes.
- Mistral Magistral Small 2509 is $0.38/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- No overlapping tracked provider route is sourced for Mistral Magistral Small 2509 and DeepSeek V3 0324; plan for SDK, billing, or endpoint changes.
- DeepSeek V3 0324 is $0.38/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-03-24 | 2025-09-01 |
| Context window | 160K | — |
| Parameters | 671B | 24B |
| Architecture | decoder only | - |
| License | Open Source | Proprietary |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | DeepSeek V3 0324 | Mistral Magistral Small 2509 |
|---|---|---|
| Input price | $0.27/1M tokens | $0.50/1M tokens |
| Output price | $1.12/1M tokens | $1.50/1M tokens |
| Providers |
Capabilities
| Capability | DeepSeek V3 0324 | Mistral Magistral Small 2509 |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| 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 is close: both models cover the core production surface. That makes context budget, benchmark fit, and provider maturity more important than a simple checklist. If your application depends on one integration detail, verify it against the provider route you plan to use, not just the base model listing.
For cost, DeepSeek V3 0324 lists $0.27/1M input and $1.12/1M output tokens on the cheapest tracked provider, while Mistral Magistral Small 2509 lists $0.50/1M input and $1.50/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts DeepSeek V3 0324 lower by about $0.27 per million blended tokens. Availability is 3 providers versus 2, so concentration risk also matters.
Choose DeepSeek V3 0324 when provider fit, lower input-token cost, and broader provider choice are central to the workload. Choose Mistral Magistral Small 2509 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, DeepSeek V3 0324 or Mistral Magistral Small 2509?
DeepSeek V3 0324 is cheaper on tracked token pricing. DeepSeek V3 0324 costs $0.27/1M input and $1.12/1M output tokens. Mistral Magistral Small 2509 costs $0.50/1M input and $1.50/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is DeepSeek V3 0324 or Mistral Magistral Small 2509 open source?
DeepSeek V3 0324 is listed under Open Source. Mistral Magistral Small 2509 is listed under Proprietary. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Where can I run DeepSeek V3 0324 and Mistral Magistral Small 2509?
DeepSeek V3 0324 is available on Fireworks AI, Microsoft Foundry, and Novita AI. Mistral Magistral Small 2509 is available on AWS Bedrock and Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick DeepSeek V3 0324 over Mistral Magistral Small 2509?
DeepSeek V3 0324 is ~85% cheaper at $0.27/1M; pay for Mistral Magistral Small 2509 only for provider fit. If your workload also depends on provider fit, start with DeepSeek V3 0324; if it depends on provider fit, run the same evaluation with Mistral Magistral Small 2509.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.