Gemini 3.1 Pro Preview vs Xiaomi MiMo-V2.5-TTS-Series
Gemini 3.1 Pro Preview (2026) and Xiaomi MiMo-V2.5-TTS-Series (2026) are general-purpose language models from Google DeepMind and Xiaomi. Gemini 3.1 Pro Preview ships a 1M-token context window, while Xiaomi MiMo-V2.5-TTS-Series ships a not-yet-sourced context window. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing. The goal is to make the tradeoff clear before deeper testing.
Xiaomi MiMo-V2.5-TTS-Series is safer overall; choose Gemini 3.1 Pro Preview when coding workflow support matters.
Decision scorecard
Local evidence first| Signal | Gemini 3.1 Pro Preview | Xiaomi MiMo-V2.5-TTS-Series |
|---|---|---|
| Decision fit | Coding, RAG, and Agents | Vision |
| Context window | 1M | — |
| Cheapest output | $12/1M tokens | - |
| Provider routes | 4 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Gemini 3.1 Pro Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Gemini 3.1 Pro Preview has broader tracked provider coverage for fallback and procurement flexibility.
- Gemini 3.1 Pro Preview uniquely exposes Vision, Function calling, and Tool use in local model data.
- Local decision data tags Gemini 3.1 Pro Preview for Coding, RAG, and Agents.
- Local decision data tags Xiaomi MiMo-V2.5-TTS-Series for Vision.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Gemini 3.1 Pro Preview
$4,600
Cheapest tracked route: Google AI Studio
Xiaomi MiMo-V2.5-TTS-Series
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 Gemini 3.1 Pro Preview and Xiaomi MiMo-V2.5-TTS-Series; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision, Function calling, and Tool use before moving production traffic.
- No overlapping tracked provider route is sourced for Xiaomi MiMo-V2.5-TTS-Series and Gemini 3.1 Pro Preview; plan for SDK, billing, or endpoint changes.
- Gemini 3.1 Pro Preview adds Vision, Function calling, and Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-02-19 | 2026-04-23 |
| Context window | 1M | — |
| Parameters | — | — |
| Architecture | decoder only | - |
| License | Proprietary | Proprietary |
| Knowledge cutoff | 2025-01 | - |
Pricing and availability
| Pricing attribute | Gemini 3.1 Pro Preview | Xiaomi MiMo-V2.5-TTS-Series |
|---|---|---|
| Input price | $2/1M tokens | - |
| Output price | $12/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Gemini 3.1 Pro Preview | Xiaomi MiMo-V2.5-TTS-Series |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | Yes |
| Reasoning | No | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | Yes | No |
| Code execution | Yes | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Gemini 3.1 Pro Preview, function calling: Gemini 3.1 Pro Preview, tool use: Gemini 3.1 Pro Preview, structured outputs: Gemini 3.1 Pro Preview, and code execution: Gemini 3.1 Pro Preview. Both models share multimodal input, 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: Gemini 3.1 Pro Preview has $2/1M input tokens and Xiaomi MiMo-V2.5-TTS-Series 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 Gemini 3.1 Pro Preview when coding workflow support and broader provider choice are central to the workload. Choose Xiaomi MiMo-V2.5-TTS-Series when provider fit 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
Is Gemini 3.1 Pro Preview or Xiaomi MiMo-V2.5-TTS-Series open source?
Gemini 3.1 Pro Preview is listed under Proprietary. Xiaomi MiMo-V2.5-TTS-Series 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, Gemini 3.1 Pro Preview or Xiaomi MiMo-V2.5-TTS-Series?
Gemini 3.1 Pro Preview 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, Gemini 3.1 Pro Preview or Xiaomi MiMo-V2.5-TTS-Series?
Both Gemini 3.1 Pro Preview and Xiaomi MiMo-V2.5-TTS-Series expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Which is better for function calling, Gemini 3.1 Pro Preview or Xiaomi MiMo-V2.5-TTS-Series?
Gemini 3.1 Pro Preview has the clearer documented function calling signal in this comparison. If function calling is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for tool use, Gemini 3.1 Pro Preview or Xiaomi MiMo-V2.5-TTS-Series?
Gemini 3.1 Pro Preview has the clearer documented tool use signal in this comparison. If tool use is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Gemini 3.1 Pro Preview and Xiaomi MiMo-V2.5-TTS-Series?
Gemini 3.1 Pro Preview is available on Google AI Studio, GCP Vertex AI, OpenRouter, and Replicate API. Xiaomi MiMo-V2.5-TTS-Series is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.