Tencent Hy3 Preview vs Mistral Magistral Small 2509
Tencent Hy3 Preview (2026) and Mistral Magistral Small 2509 (2025) are frontier reasoning models from Tencent AI Lab and MistralAI. Tencent Hy3 Preview ships a 262K-token context window, while Mistral Magistral Small 2509 ships a not-yet-sourced context window. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Tencent Hy3 Preview is safer overall; choose Mistral Magistral Small 2509 when provider fit matters.
Specs
| Released | 2026-04-22 | 2025-09-01 |
| Context window | 262K | — |
| Parameters | 295B | — |
| Architecture | dense moe hybrid | - |
| License | Proprietary | Proprietary |
| Knowledge cutoff | - | - |
Pricing and availability
| Tencent Hy3 Preview | Mistral Magistral Small 2509 | |
|---|---|---|
| Input price | - | $0.5/1M tokens |
| Output price | - | $1.5/1M tokens |
| Providers |
Capabilities
| Tencent Hy3 Preview | Mistral Magistral Small 2509 | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on reasoning mode: Tencent Hy3 Preview, function calling: Tencent Hy3 Preview, and tool use: Tencent 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.
Pricing coverage is uneven: Tencent Hy3 Preview has no token price sourced yet and Mistral Magistral Small 2509 has $0.5/1M input tokens. Provider availability is 1 tracked routes versus 1. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Tencent Hy3 Preview when reasoning depth 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. For teams standardizing a stack, that distinction is often the difference between a benchmark win and a reliable deployment.
FAQ
Is Tencent Hy3 Preview or Mistral Magistral Small 2509 open source?
Tencent Hy3 Preview is listed under Proprietary. 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.
Which is better for reasoning mode, Tencent Hy3 Preview or Mistral Magistral Small 2509?
Tencent 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, Tencent Hy3 Preview or Mistral Magistral Small 2509?
Tencent 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, Tencent Hy3 Preview or Mistral Magistral Small 2509?
Tencent 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 Tencent Hy3 Preview and Mistral Magistral Small 2509?
Tencent Hy3 Preview is available on OpenRouter. Mistral Magistral Small 2509 is available on AWS Bedrock. Provider coverage can affect latency, region availability, compliance posture, and fallback options. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
When should I pick Tencent Hy3 Preview over Mistral Magistral Small 2509?
Tencent Hy3 Preview is safer overall; choose Mistral Magistral Small 2509 when provider fit matters. If your workload also depends on reasoning depth, start with Tencent Hy3 Preview; if it depends on provider fit, run the same evaluation with Mistral Magistral Small 2509.
Continue comparing
Last reviewed: 2026-04-27. Data sourced from public model cards and provider documentation.