MiMo-V2.5-Pro vs Mistral Small 3
MiMo-V2.5-Pro (2026) and Mistral Small 3 (2025) compare a coding-specialized model against a standalone API model. MiMo-V2.5-Pro ships a 1M-token context window, while Mistral Small 3 ships a 32K-token context window. On LMArena Text Arena - Creative Writing, MiMo-V2.5-Pro leads by 244 pts. On pricing, Mistral Small 3 costs $0.10/1M input tokens versus $0.43/1M for the alternative. This page treats the result as workflow and deployment fit, not a universal model winner.
Treat this as a product-type comparison: MiMo-V2.5-Pro is coding-specialized model, while Mistral Small 3 is standalone API model. Choose based on workflow fit before reading any benchmark score or price as decisive.
Decision scorecard
Local evidence first| Signal | MiMo-V2.5-Pro | Mistral Small 3 |
|---|---|---|
| Product type | Coding-specialized model | Standalone API model |
| Best for | custom coding agents, code generation, and tool loops | tool-calling agents and provider-routed production |
| Decision fit | Coding, RAG, and Agents | Agents, Classification, and JSON / Tool use |
| Context window | 1M | 32K |
| Cheapest output | $0.87/1M tokens | $0.30/1M tokens |
| Provider routes | 3 tracked | 3 tracked |
| Shared benchmarks | LMArena Text Arena - Creative Writing leader | 1 shared |
Decision tradeoffs
- MiMo-V2.5-Pro holds a shared-benchmark lead on LMArena Text Arena - Creative Writing, ahead by 244 points.
- MiMo-V2.5-Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags MiMo-V2.5-Pro for Coding, RAG, and Agents.
- Mistral Small 3 has the lower cheapest tracked output price at $0.30/1M tokens.
- 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.
MiMo-V2.5-Pro
$566
Cheapest tracked route/tier: OpenRouter
Mistral Small 3
$155
Cheapest tracked route/tier: Together AI
Estimated monthly gap: $411. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Mistral Small 3 is $0.57/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- MiMo-V2.5-Pro is $0.57/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-22 | 2025-01-30 |
| Context window | 1M | 32K |
| Parameters | 1T | 24B |
| Architecture | Mixture of Experts | Decoder Only |
| License | Proprietary | Apache 2.0OSI-approved |
| Openness | Proprietary | Open source |
| Weights | Not released | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Restricted | Permitted |
| Knowledge cutoff | - | 2023-10 |
Pricing and availability
| Pricing attribute | MiMo-V2.5-Pro | Mistral Small 3 |
|---|---|---|
| Input price | $0.43/1M tokens | $0.10/1M tokens |
| Output price | $0.87/1M tokens | $0.30/1M tokens |
| Providers |
Capabilities
| Capability | MiMo-V2.5-Pro | Mistral Small 3 |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | MiMo-V2.5-Pro | Mistral Small 3 |
|---|---|---|
| LMArena Text Arena - Creative Writing | 1438.0 | 1194.0 |
Deep dive
On shared benchmark coverage, LMArena Text Arena - Creative Writing has MiMo-V2.5-Pro at 1438 and Mistral Small 3 at 1194, with MiMo-V2.5-Pro ahead by 244 points. The largest visible gap is 244 points on LMArena Text Arena - Creative Writing, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint is close: both models cover JSON / Tool use, and structured outputs. That makes context budget, benchmark fit, and provider maturity more important than a simple checklist. If your application depends on one integration detail, verify it against the provider route you plan to use, not just the base model listing.
For cost, MiMo-V2.5-Pro lists $0.43/1M input and $0.87/1M output tokens on the cheapest listed provider, while Mistral Small 3 lists $0.10/1M input and $0.30/1M output tokens on the cheapest listed provider. A 70/30 input-output blend puts Mistral Small 3 lower by about $0.41 per million blended tokens. Availability is 3 providers versus 3, so concentration risk also matters.
Choose MiMo-V2.5-Pro when coding workflow support and larger context windows 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, MiMo-V2.5-Pro or Mistral Small 3?
MiMo-V2.5-Pro supports 1M tokens, while Mistral Small 3 supports 32K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, MiMo-V2.5-Pro or Mistral Small 3?
Mistral Small 3 is cheaper on listed token pricing. MiMo-V2.5-Pro costs $0.43/1M input and $0.87/1M 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 MiMo-V2.5-Pro or Mistral Small 3 open source?
MiMo-V2.5-Pro is listed under Proprietary. 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 JSON / Tool use, MiMo-V2.5-Pro or Mistral Small 3?
Both MiMo-V2.5-Pro and Mistral Small 3 expose JSON / Tool use. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for JSON / Tool use, MiMo-V2.5-Pro or Mistral Small 3?
Both MiMo-V2.5-Pro and Mistral Small 3 expose JSON / Tool use. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Where can I run MiMo-V2.5-Pro and Mistral Small 3?
MiMo-V2.5-Pro is available on OpenRouter, Xiaomi, and Novita AI. Mistral Small 3 is available on Together AI, OpenRouter, and Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
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Last reviewed: 2026-10-29. Data sourced from public model cards and provider documentation.