Mistral Large 3 675B Instruct vs Mistral Small 3
Mistral Large 3 675B Instruct (2025) and Mistral Small 3 (2025) are compact production models from MistralAI. Mistral Large 3 675B Instruct ships a 128k-token context window, while Mistral Small 3 ships a 33k-token context window. On pricing, Mistral Small 3 costs $0.10/1M 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.
Mistral Small 3 is ~400% cheaper at $0.10/1M; pay for Mistral Large 3 675B Instruct only for long-context analysis.
Decision scorecard
Local evidence first| Signal | Mistral Large 3 675B Instruct | Mistral Small 3 |
|---|---|---|
| Best for | multimodal apps and provider-routed production | tool-calling agents and provider-routed production |
| Decision fit | Coding, RAG, and Agents | Agents, Classification, and JSON / Tool use |
| Context window | 128k | 33k |
| Cheapest output | $1.50/1M tokens | $0.30/1M tokens |
| Provider routes | 6 tracked | 2 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Mistral Large 3 675B Instruct has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Mistral Large 3 675B Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Mistral Large 3 675B Instruct uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Mistral Large 3 675B Instruct for Coding, RAG, and Agents.
- Mistral Small 3 has the lower cheapest tracked output price at $0.30/1M tokens.
- Mistral Small 3 uniquely exposes Function calling and Tool use in local model data.
- Local decision data tags Mistral Small 3 for Agents, Classification, and JSON / Tool use.
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 Small 3
$155
Cheapest tracked route/tier: Together AI
Estimated monthly gap: $620. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on Vercel AI Gateway; start route-level A/B tests there.
- Mistral Small 3 is $1.20/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- Mistral Small 3 adds Function calling and Tool use in local capability data.
- Provider overlap exists on Vercel AI Gateway; start route-level A/B tests there.
- Mistral Large 3 675B Instruct is $1.20/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Function calling and Tool use before moving production traffic.
- Mistral Large 3 675B Instruct adds Vision and Multimodal in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-12-01 | 2025-01-01 |
| Context window | 128k | 33k |
| Parameters | 675B | 24B |
| Architecture | Decoder Only | Decoder Only |
| License | Apache 2.0OSI-approved | Apache 2.0OSI-approved |
| Openness | Open source | Open source |
| Weights | Unknown | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: permitted | Commercial use: permitted |
| Knowledge cutoff | 2024-11 | 2023-10 |
Pricing and availability
| Pricing attribute | Mistral Large 3 675B Instruct | Mistral Small 3 |
|---|---|---|
| Input price | $0.50/1M tokens | $0.10/1M tokens |
| Output price | $1.50/1M tokens | $0.30/1M tokens |
| Providers |
Capabilities
| Capability | Mistral Large 3 675B Instruct | Mistral Small 3 |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | No | No |
| Function calling | No | Yes |
| Tool use | No | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| 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 vision: Mistral Large 3 675B Instruct, multimodal input: Mistral Large 3 675B Instruct, function calling: Mistral Small 3, and tool use: Mistral Small 3. Both models share 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 Small 3 lists $0.10/1M input and $0.30/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Mistral Small 3 lower by about $0.64 per million blended tokens. Availability is 6 providers versus 2, so concentration risk also matters.
Choose Mistral Large 3 675B Instruct when long-context analysis, larger context windows, and broader provider choice are central to the workload. Choose Mistral Small 3 when provider fit 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.
FAQ
Which has a larger context window, Mistral Large 3 675B Instruct or Mistral Small 3?
Mistral Large 3 675B Instruct supports 128k tokens, while Mistral Small 3 supports 33k 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 Small 3?
Mistral Small 3 is cheaper on tracked token pricing. Mistral Large 3 675B Instruct costs $0.50/1M input and $1.50/1M output tokens. Mistral Small 3 costs $0.10/1M input and $0.30/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Mistral Large 3 675B Instruct or Mistral Small 3 open source?
Mistral Large 3 675B Instruct is listed under Apache 2.0. Mistral Small 3 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 vision, Mistral Large 3 675B Instruct or Mistral Small 3?
Mistral Large 3 675B Instruct has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, Mistral Large 3 675B Instruct or Mistral Small 3?
Mistral Large 3 675B Instruct has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Mistral Large 3 675B Instruct and Mistral Small 3?
Mistral Large 3 675B Instruct is available on OpenRouter, AWS Bedrock, NVIDIA NIM, Mistral AI Studio, and Microsoft Foundry. Mistral Small 3 is available on Together AI and Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.