MiMo-V2.5-Pro (Reasoning)

by Xiaomi

MiMo-V2.5-Pro (Reasoning) is a reasoning model from Xiaomi, released on April 27, 2026. It has a 1M-token context window and can generate up to 131K output tokens. API pricing is $0.43 per 1M input tokens and $0.87 per 1M output tokens. It ranks #98 of 220 models by Intelligence Score with a score of 25.6.

MiMo-V2.5-Pro is Xiaomi's 1.02T-parameter sparse Mixture-of-Experts language model with 42B active parameters and a 1M-token context window. It inherits the MiMo-V2-Flash hybrid-attention and Multi-Token Prediction design, extends context during pre-training up to 1M tokens, and uses supervised fine-tuning, domain-specialized reinforcement learning, and Multi-Teacher On-Policy Distillation to improve complex software engineering, long-horizon agentic tasks, and ultra-long-context coherence.

Key specs

ProviderXiaomi
Release date2026-04-27
Licenseopen source
Context window1M tokens
Max output131K tokens
Input price$0.43 / 1M tokens
Output price$0.87 / 1M tokens
Intelligence Score25.6
Coding index32.2

Quick answers

What is the context window of MiMo-V2.5-Pro (Reasoning)?

MiMo-V2.5-Pro (Reasoning) has a context window of 1M tokens, with a maximum output of 131K tokens per response.

How much does MiMo-V2.5-Pro (Reasoning) cost?

MiMo-V2.5-Pro (Reasoning) costs $0.43 per 1M input tokens and $0.87 per 1M output tokens through the API.

Is MiMo-V2.5-Pro (Reasoning) open source?

Yes. MiMo-V2.5-Pro (Reasoning) is an open model released under the open source license.

When was MiMo-V2.5-Pro (Reasoning) released?

Xiaomi released MiMo-V2.5-Pro (Reasoning) on April 27, 2026.

How does MiMo-V2.5-Pro (Reasoning) compare to Claude Opus 5.5 (Reasoning)?

MiMo-V2.5-Pro (Reasoning) scores 25.6 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.43 vs $4 per 1M tokens.

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