Xiaomi MiMo-V2.5 vs o3
Xiaomi MiMo-V2.5 (2026) and o3 (2025) are frontier-tier reasoning models from Xiaomi and OpenAI. Xiaomi MiMo-V2.5 ships a 1M-token context window, while o3 ships a 128K-token context window. On pricing, Xiaomi MiMo-V2.5 costs $0.4/1M input tokens versus $1/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Xiaomi MiMo-V2.5 is ~150% cheaper at $0.4/1M; pay for o3 only for coding workflow support.
Specs
| Released | 2026-04-22 | 2025-03-31 |
| Context window | 1M | 128K |
| Parameters | — | — |
| Architecture | - | decoder only |
| License | Proprietary | Unknown |
| Knowledge cutoff | - | - |
Pricing and availability
| Xiaomi MiMo-V2.5 | o3 | |
|---|---|---|
| Input price | $0.4/1M tokens | $1/1M tokens |
| Output price | $2/1M tokens | $4/1M tokens |
| Providers |
Capabilities
| Xiaomi MiMo-V2.5 | o3 | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Xiaomi MiMo-V2.5, multimodal input: Xiaomi MiMo-V2.5, function calling: Xiaomi MiMo-V2.5, tool use: Xiaomi MiMo-V2.5, and code execution: o3. Both models share reasoning mode 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, Xiaomi MiMo-V2.5 lists $0.4/1M input and $2/1M output tokens, while o3 lists $1/1M input and $4/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Xiaomi MiMo-V2.5 lower by about $1.02 per million blended tokens. Availability is 1 providers versus 3, so concentration risk also matters.
Choose Xiaomi MiMo-V2.5 when long-context analysis, larger context windows, and lower input-token cost are central to the workload. Choose o3 when coding workflow support and broader provider choice 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.
FAQ
Which has a larger context window, Xiaomi MiMo-V2.5 or o3?
Xiaomi MiMo-V2.5 supports 1M tokens, while o3 supports 128K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is cheaper, Xiaomi MiMo-V2.5 or o3?
Xiaomi MiMo-V2.5 is cheaper on tracked token pricing. Xiaomi MiMo-V2.5 costs $0.4/1M input and $2/1M output tokens. o3 costs $1/1M input and $4/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Xiaomi MiMo-V2.5 or o3 open source?
Xiaomi MiMo-V2.5 is listed under Proprietary. o3 is listed under Unknown. 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, Xiaomi MiMo-V2.5 or o3?
Xiaomi MiMo-V2.5 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. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, Xiaomi MiMo-V2.5 or o3?
Xiaomi MiMo-V2.5 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 Xiaomi MiMo-V2.5 and o3?
Xiaomi MiMo-V2.5 is available on OpenRouter. o3 is available on OpenAI API, OpenRouter, and OpenAI Batch API. Provider coverage can affect latency, region availability, compliance posture, and fallback options. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Continue comparing
Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.