Firefunction V1 vs Mistral Magistral Small 2509
Firefunction V1 (2024) and Mistral Magistral Small 2509 (2025) are compact production models from Fireworks AI and MistralAI. Firefunction V1 ships a 8k-token context window, while Mistral Magistral Small 2509 ships a not-yet-sourced context window. On pricing, both list $0.50/1M input tokens on the cheapest tracked route. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Mistral Magistral Small 2509 is safer overall; choose Firefunction V1 when provider fit matters.
Decision scorecard
Local evidence first| Signal | Firefunction V1 | Mistral Magistral Small 2509 |
|---|---|---|
| Best for | general production evaluation | provider-routed production |
| Decision fit | General | General |
| Context window | 8k | — |
| Cheapest output | $0.50/1M tokens | $1.50/1M tokens |
| Provider routes | 1 tracked | 2 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Firefunction V1 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Firefunction V1 has the lower cheapest tracked output price at $0.50/1M tokens.
- Mistral Magistral Small 2509 has broader tracked provider coverage for fallback and procurement flexibility.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Firefunction V1
$525
Cheapest tracked route/tier: Fireworks AI
Mistral Magistral Small 2509
$775
Cheapest tracked route/tier: AWS Bedrock
Estimated monthly gap: $250. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Firefunction V1 and Mistral Magistral Small 2509; plan for SDK, billing, or endpoint changes.
- Mistral Magistral Small 2509 is $1/1M 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 Firefunction V1; plan for SDK, billing, or endpoint changes.
- Firefunction V1 is $1/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-01-29 | 2025-09-01 |
| Context window | 8k | — |
| Parameters | 46B | 24B |
| Architecture | decoder only | - |
| License | Unknown | Proprietary |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Firefunction V1 | Mistral Magistral Small 2509 |
|---|---|---|
| Input price | $0.50/1M tokens | $0.50/1M tokens |
| Output price | $0.50/1M tokens | $1.50/1M tokens |
| Providers |
Capabilities
| Capability | Firefunction V1 | 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, Firefunction V1 lists $0.50/1M input and $0.50/1M 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 Firefunction V1 lower by about $0.30 per million blended tokens. Availability is 1 providers versus 2, so concentration risk also matters.
Choose Firefunction V1 when provider fit are central to the workload. Choose Mistral Magistral Small 2509 when provider fit and broader provider choice 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, Firefunction V1 or Mistral Magistral Small 2509?
Firefunction V1 is cheaper on tracked token pricing. Firefunction V1 costs $0.50/1M input and $0.50/1M 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 Firefunction V1 or Mistral Magistral Small 2509 open source?
Firefunction V1 is listed under Unknown. 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 Firefunction V1 and Mistral Magistral Small 2509?
Firefunction V1 is available on Fireworks 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 Firefunction V1 over Mistral Magistral Small 2509?
Mistral Magistral Small 2509 is safer overall; choose Firefunction V1 when provider fit matters. If your workload also depends on provider fit, start with Firefunction V1; 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.