GPT-5.1-Codex-Mini vs MiMo-V2.5 (Comparative Analysis)
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Comparative Analysis: GPT-5.1-Codex-Mini vs. MiMo-V2.5
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Overview
GPT-5.1-Codex-Mini was released 5 months before MiMo-V2.5.
 GPT-5.1-Codex-Mini |  MiMo-V2.5 | |
|---|---|---|
Model Provider The organization behind this AI's development | OpenAI | Xiaomi |
Input Context Window Maximum input tokens this model can process at once | 400K tokens | 1.1M tokens |
Output Token Limit Maximum output tokens this model can generate at once | 128K tokens | 131.1K tokens |
Release Date When this model first became publicly available | November 13, 2025 8 months ago November 13th, 2025 | April 22, 2026 3 months ago April 22nd, 2026 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GPT-5.1-Codex-Mini | MiMo-V2.5 | |
|---|---|---|
Input Types Supported input formats | 🖼️Image📝Text | 📝Text🎵Audio🖼️Image🎬Video |
Reasoning Controls Defaults and configurable reasoning effort | OptionalEffort: High, Medium, LowDefault: Medium | Optional |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | GPT | Other |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation |
Open Source Model availability | Proprietary | Available on HuggingFace → |
Pricing
GPT-5.1-Codex-Mini is roughly 1.8x more expensive compared to MiMo-V2.5 for input tokens and roughly 7.1x more expensive for output tokens.
| GPT-5.1-Codex-Mini | MiMo-V2.5 | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.25 per million tokens | $0.14 per million tokens |
Output Token Cost Cost per million output tokens | $2.00 per million tokens | $0.28 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.01 per search | Not specified |
Cache Read Cost Cost to reuse cached input tokens | $0.03 per million tokens | $0.0028 per million tokens |
Benchmarks
Compare relevant benchmarks between GPT-5.1-Codex-Mini and MiMo-V2.5.
| GPT-5.1-Codex-Mini | MiMo-V2.5 | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | Benchmark not available. | 38 (Artificial Analysis index; higher is better) |
Coding Index Programming performance across independent evaluations | Benchmark not available. | 56.8 (Artificial Analysis index; higher is better) |
Agentic Index Ability to complete multi-step agentic tasks | Benchmark not available. | 24.4 (Artificial Analysis index; higher is better) |
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,142 Elo (#46 in Asciiart (43.0% win rate)) | 1,293 Elo (#19 in UI Component (55.3% win rate)) |
At a Glance
Quick overview of what makes GPT-5.1-Codex-Mini and MiMo-V2.5 unique.
GPT-5.1-Codex-Mini by OpenAI understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 400K token context window. Reasonably priced at $0.25/M input and $2.00/M output tokens. Released November 13th, 2025.MiMo-V2.5 by Xiaomi understands both text and images, handles audio, analyzes video, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1.1M token context window. Very affordable at $0.14/M input and $0.28/M output tokens. Released April 22nd, 2026.Explore More Comparisons
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