Mistral Medium 3 Instruct vs Qwen3-105B
Mistral Medium 3 Instruct (2025) and Qwen3-105B (2025) are compact production models from MistralAI and Alibaba. Mistral Medium 3 Instruct ships a 128K-token context window, while Qwen3-105B ships a 128k-token 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. The goal is to make the tradeoff clear before deeper testing.
Qwen3-105B is safer overall; choose Mistral Medium 3 Instruct when provider fit matters.
Decision scorecard
Local evidence first| Signal | Mistral Medium 3 Instruct | Qwen3-105B |
|---|---|---|
| Decision fit | Long context | RAG, Agents, and Long context |
| Context window | 128K | 128k |
| Cheapest output | $2/1M tokens | - |
| Provider routes | 2 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Mistral Medium 3 Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Mistral Medium 3 Instruct for Long context.
- Qwen3-105B uniquely exposes Function calling and Tool use in local model data.
- Local decision data tags Qwen3-105B for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Mistral Medium 3 Instruct
$820
Cheapest tracked route: Mistral AI Studio
Qwen3-105B
Unavailable
No complete token price in local provider data
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Mistral Medium 3 Instruct and Qwen3-105B; plan for SDK, billing, or endpoint changes.
- Qwen3-105B adds Function calling and Tool use in local capability data.
- No overlapping tracked provider route is sourced for Qwen3-105B and Mistral Medium 3 Instruct; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Function calling and Tool use before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-10-01 | 2025-12-15 |
| Context window | 128K | 128k |
| Parameters | — | 105B |
| Architecture | decoder only | - |
| License | 1 | Open Source |
| Knowledge cutoff | 2025-03 | 2025-02 |
Pricing and availability
| Pricing attribute | Mistral Medium 3 Instruct | Qwen3-105B |
|---|---|---|
| Input price | $0.4/1M tokens | - |
| Output price | $2/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Mistral Medium 3 Instruct | Qwen3-105B |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | No | Yes |
| Tool use | No | Yes |
| Structured outputs | No | No |
| Code execution | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on function calling: Qwen3-105B and tool use: Qwen3-105B. 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: Mistral Medium 3 Instruct has $0.4/1M input tokens and Qwen3-105B has no token price sourced yet. Provider availability is 2 tracked routes versus 0. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Mistral Medium 3 Instruct when provider fit and broader provider choice are central to the workload. Choose Qwen3-105B 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
Which has a larger context window, Mistral Medium 3 Instruct or Qwen3-105B?
Mistral Medium 3 Instruct supports 128K tokens, while Qwen3-105B supports 128k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Mistral Medium 3 Instruct or Qwen3-105B open source?
Mistral Medium 3 Instruct is listed under 1. Qwen3-105B is listed under Open Source. 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 function calling, Mistral Medium 3 Instruct or Qwen3-105B?
Qwen3-105B 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, Mistral Medium 3 Instruct or Qwen3-105B?
Qwen3-105B 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 Mistral Medium 3 Instruct and Qwen3-105B?
Mistral Medium 3 Instruct is available on NVIDIA NIM and Mistral AI Studio. Qwen3-105B is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Mistral Medium 3 Instruct over Qwen3-105B?
Qwen3-105B is safer overall; choose Mistral Medium 3 Instruct when provider fit matters. If your workload also depends on provider fit, start with Mistral Medium 3 Instruct; if it depends on provider fit, run the same evaluation with Qwen3-105B.
Continue comparing
Last reviewed: 2026-05-19. Data sourced from public model cards and provider documentation.