gpt-oss-20b vs MiMo-V2.5 (Comparative Analysis)
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Comparative Analysis: gpt-oss-20b vs. MiMo-V2.5
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Overview
gpt-oss-20b was released 8 months before MiMo-V2.5.
 gpt-oss-20b |  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 | 131.1K tokens | 1.1M tokens |
Output Token Limit Maximum output tokens this model can generate at once | 131.1K tokens | 131.1K tokens |
Release Date When this model first became publicly available | August 5, 2025 11 months ago August 5th, 2025 | April 22, 2026 3 months ago April 22nd, 2026 |
Knowledge Cutoff Latest training-data date reported by the provider | June 30, 2024 | Not reported |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
gpt-oss-20b | MiMo-V2.5 | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🎵Audio🖼️Image🎬Video |
Reasoning Controls Defaults and configurable reasoning effort | Always enabledEffort: 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 | Available on HuggingFace → | Available on HuggingFace → |
Pricing
gpt-oss-20b is roughly 0.2x less expensive compared to MiMo-V2.5 for input tokens and roughly 0.5x less expensive for output tokens.
| gpt-oss-20b | MiMo-V2.5 | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.03 per million tokens | $0.14 per million tokens |
Output Token Cost Cost per million output tokens | $0.14 per million tokens | $0.28 per million tokens |
Cache Read Cost Cost to reuse cached input tokens | Not specified | $0.0028 per million tokens |
Benchmarks
Compare relevant benchmarks between gpt-oss-20b and MiMo-V2.5.
| gpt-oss-20b | MiMo-V2.5 | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | 14.9 (Artificial Analysis index; higher is better) | 37.2 (Artificial Analysis index; higher is better) |
Coding Index Programming performance across independent evaluations | 20.7 (Artificial Analysis index; higher is better) | 56.8 (Artificial Analysis index; higher is better) |
Agentic Index Ability to complete multi-step agentic tasks | 3.1 (Artificial Analysis index; higher is better) | 23.7 (Artificial Analysis index; higher is better) |
Best Design Arena Score Highest human-preference Elo score across design arenas | 966 Elo (#100 in Data Viz (39.7% win rate)) | 1,301 Elo (#16 in Game Dev (56.5% win rate)) |
At a Glance
Quick overview of what makes gpt-oss-20b and MiMo-V2.5 unique.
gpt-oss-20b by OpenAI can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 131.1K token context window. Very affordable at $0.03/M input and $0.14/M output tokens. Released August 5th, 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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Best models for coding and development
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Content creation and marketing tasks
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Technical analysis and explanations
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Scientific research and analysis
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