o4-mini vs Xiaomi MiMo-V2-Pro
o4-mini (2025) and Xiaomi MiMo-V2-Pro (2026) are frontier reasoning models from OpenAI and Xiaomi. o4-mini ships a 200k-token context window, while Xiaomi MiMo-V2-Pro ships a 1m-token context window. 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.
Xiaomi MiMo-V2-Pro fits 5x more tokens; pick it for long-context work and o4-mini for tighter calls.
Decision scorecard
Local evidence first| Signal | o4-mini | Xiaomi MiMo-V2-Pro |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | tool-calling agents and long-context analysis |
| Decision fit | Coding, RAG, and Agents | RAG, Agents, and Long context |
| Context window | 200k | 1m |
| Cheapest output | $4/1M tokens | - |
| Provider routes | 4 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- o4-mini has broader tracked provider coverage for fallback and procurement flexibility.
- o4-mini uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags o4-mini for Coding, RAG, and Agents.
- Xiaomi MiMo-V2-Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags Xiaomi MiMo-V2-Pro 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.
o4-mini
$1,800
Cheapest tracked route/tier: Replicate API
Xiaomi MiMo-V2-Pro
Unavailable
No complete token price in local provider data
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for o4-mini and Xiaomi MiMo-V2-Pro; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
- No overlapping tracked provider route is sourced for Xiaomi MiMo-V2-Pro and o4-mini; plan for SDK, billing, or endpoint changes.
- o4-mini adds Vision, Multimodal, and Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-04-16 | 2026-03-19 |
| Context window | 200k | 1m |
| Parameters | — | 1T |
| Architecture | decoder only | - |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | 2025-08 | 2024-12 |
Pricing and availability
| Pricing attribute | o4-mini | Xiaomi MiMo-V2-Pro |
|---|---|---|
| Input price | $1/1M tokens | - |
| Output price | $4/1M tokens | - |
| Providers | - |
Capabilities
| Capability | o4-mini | Xiaomi MiMo-V2-Pro |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | No |
| Function calling | Yes | Yes |
| Tool use | Yes | No |
| Structured outputs | Yes | No |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: o4-mini, multimodal input: o4-mini, reasoning mode: o4-mini, tool use: o4-mini, structured outputs: o4-mini, and code execution: o4-mini. Both models share function calling, 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.
Pricing coverage is uneven: o4-mini has $1/1M input tokens and Xiaomi MiMo-V2-Pro has no token price sourced yet. Provider availability is 4 tracked routes versus 0. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose o4-mini when coding workflow support and broader provider choice are central to the workload. Choose Xiaomi MiMo-V2-Pro when long-context analysis and larger context windows 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. For teams standardizing a stack, that distinction is often the difference between a benchmark win and a reliable deployment.
FAQ
Which has a larger context window, o4-mini or Xiaomi MiMo-V2-Pro?
Xiaomi MiMo-V2-Pro supports 1m tokens, while o4-mini supports 200k 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.
Is o4-mini or Xiaomi MiMo-V2-Pro open source?
o4-mini is listed under Proprietary. Xiaomi MiMo-V2-Pro 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, o4-mini or Xiaomi MiMo-V2-Pro?
o4-mini 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, o4-mini or Xiaomi MiMo-V2-Pro?
o4-mini 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.
Which is better for reasoning mode, o4-mini or Xiaomi MiMo-V2-Pro?
o4-mini has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run o4-mini and Xiaomi MiMo-V2-Pro?
o4-mini is available on OpenAI API, OpenRouter, Replicate API, and Vercel AI Gateway. Xiaomi MiMo-V2-Pro is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.