Mistral Large 3 675B Instruct vs Mistral Medium 3
Mistral Large 3 675B Instruct (2025) and Mistral Medium 3 (2025) are compact production models from MistralAI. Both ship a 128K-token context window. On pricing, Mistral Medium 3 costs $0.40/1M 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. It focuses on practical selection signals rather than broad model-family marketing.
Mistral Large 3 675B Instruct is safer overall; choose Mistral Medium 3 when coding workflow support matters.
Decision scorecard
Local evidence first| Signal | Mistral Large 3 675B Instruct | Mistral Medium 3 |
|---|---|---|
| Best for | multimodal apps and provider-routed production | multimodal apps, tool-calling agents, and provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 128K | 128K |
| Cheapest output | $1.50/1M tokens | $2/1M tokens |
| Provider routes | 6 tracked | 5 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Mistral Large 3 675B Instruct has the lower cheapest tracked output price at $1.50/1M tokens.
- Mistral Large 3 675B Instruct has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Mistral Large 3 675B Instruct for Coding, RAG, and Agents.
- Mistral Medium 3 uniquely exposes JSON / Tool use and Code execution in local model data.
- Local decision data tags Mistral Medium 3 for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Mistral Large 3 675B Instruct
$775
Cheapest tracked route/tier: OpenRouter
Mistral Medium 3
$820
Cheapest tracked route/tier: Mistral AI Studio
Estimated monthly gap: $45.00. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on NVIDIA NIM, Mistral AI Studio, and Microsoft Foundry; start route-level A/B tests there.
- Mistral Medium 3 is $0.50/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Mistral Medium 3 adds JSON / Tool use and Code execution in local capability data.
- Provider overlap exists on OpenRouter, NVIDIA NIM, and Mistral AI Studio; start route-level A/B tests there.
- Mistral Large 3 675B Instruct is $0.50/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for JSON / Tool use and Code execution before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-12-01 | 2025-05-01 |
| Context window | 128K | 128K |
| Parameters | 675B | — |
| Architecture | Decoder Only | Decoder Only |
| License | Apache 2.0OSI-approved | Proprietary |
| Openness | Open source | Proprietary |
| Weights | Unknown | Not released |
| Code | Unknown | Unknown |
| Commercial use | Permitted | Restricted |
| Knowledge cutoff | 2024-11 | 2025-03 |
Pricing and availability
| Pricing attribute | Mistral Large 3 675B Instruct | Mistral Medium 3 |
|---|---|---|
| Input price | $0.50/1M tokens | $0.40/1M tokens |
| Output price | $1.50/1M tokens | $2/1M tokens |
| Providers |
Capabilities
| Capability | Mistral Large 3 675B Instruct | Mistral Medium 3 |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | No | No |
| JSON / Tool use | No | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | Yes |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
Deep dive
The capability footprint differs most on JSON / Tool use: Mistral Medium 3, JSON / Tool use: Mistral Medium 3, and code execution: Mistral Medium 3. Both models share vision, multimodal input, and structured outputs, 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, Mistral Large 3 675B Instruct lists $0.50/1M input and $1.50/1M output tokens on the cheapest tracked provider, while Mistral Medium 3 lists $0.40/1M input and $2/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Mistral Large 3 675B Instruct lower by about $0.08 per million blended tokens. Availability is 6 providers versus 5, so concentration risk also matters.
Choose Mistral Large 3 675B Instruct when vision-heavy evaluation and broader provider choice are central to the workload. Choose Mistral Medium 3 when coding workflow support and lower input-token cost 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.
FAQ
Which has a larger context window, Mistral Large 3 675B Instruct or Mistral Medium 3?
Mistral Large 3 675B Instruct supports 128K tokens, while Mistral Medium 3 supports 128K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Mistral Large 3 675B Instruct or Mistral Medium 3?
Mistral Large 3 675B Instruct is cheaper on tracked token pricing. Mistral Large 3 675B Instruct costs $0.50/1M input and $1.50/1M output tokens. Mistral Medium 3 costs $0.40/1M input and $2/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Mistral Large 3 675B Instruct or Mistral Medium 3 open source?
Mistral Large 3 675B Instruct is listed under Apache 2.0. Mistral Medium 3 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 vision, Mistral Large 3 675B Instruct or Mistral Medium 3?
Both Mistral Large 3 675B Instruct and Mistral Medium 3 expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Which is better for multimodal input, Mistral Large 3 675B Instruct or Mistral Medium 3?
Both Mistral Large 3 675B Instruct and Mistral Medium 3 expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Where can I run Mistral Large 3 675B Instruct and Mistral Medium 3?
Mistral Large 3 675B Instruct is available on OpenRouter, AWS Bedrock, NVIDIA NIM, Mistral AI Studio, and Microsoft Foundry. Mistral Medium 3 is available on NVIDIA NIM, Mistral AI Studio, Microsoft Foundry, OpenRouter, and GCP Vertex AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-10-18. Data sourced from public model cards and provider documentation.