Xiaomi MiMo-V2.5 vs Mistral Small 4
Xiaomi MiMo-V2.5 (2026) and Mistral Small 4 (2026) are frontier reasoning models from Xiaomi and MistralAI. Xiaomi MiMo-V2.5 ships a 1.05m-token context window, while Mistral Small 4 ships a 256k-token context window. On MMLU PRO, Xiaomi MiMo-V2.5 leads by 6.9 pts. On pricing, Mistral Small 4 costs $0.10/1M input tokens versus $0.14/1M 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 4 is ~40% cheaper at $0.10/1M; pay for Xiaomi MiMo-V2.5 only for reasoning depth.
Decision scorecard
Local evidence first| Signal | Xiaomi MiMo-V2.5 | Mistral Small 4 |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | multimodal apps, tool-calling agents, and provider-routed production |
| Decision fit | RAG, Agents, and Long context | RAG, Agents, and Long context |
| Context window | 1.05m | 256k |
| Cheapest output | $0.28/1M tokens | $0.30/1M tokens |
| Provider routes | 2 tracked | 3 tracked |
| Shared benchmarks | MMLU PRO leader | 2 shared |
Decision tradeoffs
- Xiaomi MiMo-V2.5 holds a shared-benchmark lead on MMLU PRO, ahead by 6.9 points.
- Xiaomi MiMo-V2.5 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Xiaomi MiMo-V2.5 has the lower cheapest tracked output price at $0.28/1M tokens.
- Xiaomi MiMo-V2.5 uniquely exposes Reasoning and Structured outputs in local model data.
- Local decision data tags Xiaomi MiMo-V2.5 for RAG, Agents, and Long context.
- Mistral Small 4 has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Mistral Small 4 for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Xiaomi MiMo-V2.5
$182
Cheapest tracked route/tier: OpenRouter
Mistral Small 4
$155
Cheapest tracked route/tier: Mistral AI Studio
Estimated monthly gap: $27.00. 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 4 is $0.02/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Reasoning and Structured outputs before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Xiaomi MiMo-V2.5 is $0.02/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Xiaomi MiMo-V2.5 adds Reasoning and Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-22 | 2026-03-16 |
| Context window | 1.05m | 256k |
| Parameters | — | 119B (6.5B active) |
| Architecture | - | Mixture of Experts |
| License | Proprietary | Apache 2.0OSI-approved |
| Openness | Proprietary | Open source |
| Weights | Not released | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | - | 2025-06 |
Pricing and availability
| Pricing attribute | Xiaomi MiMo-V2.5 | Mistral Small 4 |
|---|---|---|
| Input price | $0.14/1M tokens | $0.10/1M tokens |
| Output price | $0.28/1M tokens | $0.30/1M tokens |
| Providers |
Capabilities
| Capability | Xiaomi MiMo-V2.5 | Mistral Small 4 |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | Yes | No |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Xiaomi MiMo-V2.5 | Mistral Small 4 |
|---|---|---|
| MMLU PRO | 84.9 | 78.0 |
| Google-Proof Q&A | 83.7 | 76.9 |
Continue comparing
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.