Hunyuan Hy3 Preview vs Mistral Magistral Small 2509
Hunyuan Hy3 Preview (2026) and Mistral Magistral Small 2509 (2025) are frontier reasoning models from Tencent AI Lab and MistralAI. Hunyuan Hy3 Preview ships a 262k-token context window, while Mistral Magistral Small 2509 ships a not-yet-sourced context window. On pricing, Hunyuan Hy3 Preview costs $0.07/1M input tokens versus $0.50/1M 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.
Hunyuan Hy3 Preview is ~658% cheaper at $0.07/1M; pay for Mistral Magistral Small 2509 only for provider fit.
Decision scorecard
Local evidence first| Signal | Hunyuan Hy3 Preview | Mistral Magistral Small 2509 |
|---|---|---|
| Best for | reasoning-heavy apps, tool-calling agents, and provider-routed production | provider-routed production |
| Decision fit | Coding, RAG, and Agents | General |
| Context window | 262k | — |
| Cheapest output | $0.26/1M tokens | $1.50/1M tokens |
| Provider routes | 2 tracked | 2 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Hunyuan Hy3 Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Hunyuan Hy3 Preview has the lower cheapest tracked output price at $0.26/1M tokens.
- Hunyuan Hy3 Preview uniquely exposes Reasoning, Function calling, and Tool use in local model data.
- Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
- 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.
Hunyuan Hy3 Preview
$118
Cheapest tracked route/tier: OpenRouter
Mistral Magistral Small 2509
$775
Cheapest tracked route/tier: AWS Bedrock
Estimated monthly gap: $657. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Hunyuan Hy3 Preview and Mistral Magistral Small 2509; plan for SDK, billing, or endpoint changes.
- Mistral Magistral Small 2509 is $1.24/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Reasoning, Function calling, and Tool use before moving production traffic.
- No overlapping tracked provider route is sourced for Mistral Magistral Small 2509 and Hunyuan Hy3 Preview; plan for SDK, billing, or endpoint changes.
- Hunyuan Hy3 Preview is $1.24/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Hunyuan Hy3 Preview adds Reasoning, Function calling, and Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-22 | 2025-09-01 |
| Context window | 262k | — |
| Parameters | 295B | 24B |
| Architecture | dense moe hybrid | - |
| License | Tencent Hunyuan Community License | Apache 2.0(OSI) |
| Openness | Open weights | Open source |
| Commercial use | Commercial use with conditions | Commercial use allowed |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Hunyuan Hy3 Preview | Mistral Magistral Small 2509 |
|---|---|---|
| Input price | $0.07/1M tokens | $0.50/1M tokens |
| Output price | $0.26/1M tokens | $1.50/1M tokens |
| Providers |
Capabilities
| Capability | Hunyuan Hy3 Preview | Mistral Magistral Small 2509 |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| Function calling | Yes | No |
| Tool use | Yes | 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 reasoning mode: Hunyuan Hy3 Preview, function calling: Hunyuan Hy3 Preview, and tool use: Hunyuan Hy3 Preview. 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, Hunyuan Hy3 Preview lists $0.07/1M input and $0.26/1M 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 Hunyuan Hy3 Preview lower by about $0.68 per million blended tokens. Availability is 2 providers versus 2, so concentration risk also matters.
Choose Hunyuan Hy3 Preview when reasoning depth and lower input-token cost 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, Hunyuan Hy3 Preview or Mistral Magistral Small 2509?
Hunyuan Hy3 Preview is cheaper on tracked token pricing. Hunyuan Hy3 Preview costs $0.07/1M input and $0.26/1M 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 Hunyuan Hy3 Preview or Mistral Magistral Small 2509 open source?
Hunyuan Hy3 Preview is listed under Tencent Hunyuan Community License. Mistral Magistral Small 2509 is listed under Apache 2.0. 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 reasoning mode, Hunyuan Hy3 Preview or Mistral Magistral Small 2509?
Hunyuan Hy3 Preview has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for function calling, Hunyuan Hy3 Preview or Mistral Magistral Small 2509?
Hunyuan Hy3 Preview has the clearer documented function calling signal in this comparison. If function calling is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for tool use, Hunyuan Hy3 Preview or Mistral Magistral Small 2509?
Hunyuan Hy3 Preview has the clearer documented tool use signal in this comparison. If tool use is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Hunyuan Hy3 Preview and Mistral Magistral Small 2509?
Hunyuan Hy3 Preview is available on OpenRouter and Tencent Cloud TI Platform. 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.
Continue comparing
Last reviewed: 2026-06-07. Data sourced from public model cards and provider documentation.