xiaomi · Open weights
MiMo V2.6 Pro UltraSpeed
MiMo V2.6 Pro UltraSpeed is the latency-optimized serving mode for Xiaomi's flagship MiMo V2.6 Pro checkpoint. It preserves Pro-level quality while delivering up to 20x faster output for real-time coding, interactive agents, and other latency-sensitive workflows, with native text, image, video, and audio understanding and a 1M-token context window.
- Reasoning
- Tools
- Vision
- Structured output
- Audio input
- Video input
- Input
- Text, Images, Video, Audio
- Output
- Text
- Reasoning effort
- none · high
- Discovery tier
- Open weights
Pricing
USD per 1M tokens- Input
- $4.35
- Output
- $8.70
- Cache read
- $0.036
- Cache write
- $0.00
Reference prices as published by the model provider. API example
Specifications
- Context window
- 1M
- Max output
- 131.1K
- Average output (7 days)
- 1K tokens
- Longer than 70% of 468 models
Side by side
MiMo V2.6 Pro UltraSpeed compared
Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.
| MiMo V2.6 Pro UltraSpeedxiaomiThis model | MiMo V2.6 ProxiaomiRemove | |
|---|---|---|
| Provider | xiaomi | xiaomi |
| Discovery tier | Open weights | Open weights |
| Added | Sep 21, 2026 | Sep 21, 2026 |
| Limits | ||
| Context window | 1.05M | 1.05M |
| Max output | 131.07K | 131.07K |
| Average output | 1K tokens | 1.2K tokens |
| Pricing, USD per 1M tokens | ||
| Input | $4.35 | $0.44Best |
| Output | $8.70 | $0.87Best |
| Cache read | $0.036 | $0.0036Best |
| Cache write | $0.00 | $0.00 |
| Performance | ||
| Throughput | 263.0 tok/sBest | 26.3 tok/s |
| Time to first token | 11.1 s | 4.0 sBest |
| Request success (24h) | 100.0%Best | 99.8% |
| Benchmark indexes | ||
| Intelligence Index | 46.3 | 46.3 |
| Capabilities | ||
| Reasoning | Yes | Yes |
| Tools | Yes | Yes |
| Vision | Yes | Yes |
| Structured output | Yes | Yes |
| Audio input | Yes | Yes |
| Video input | Yes | Yes |
| Reasoning effort | none, high | none, high |
Public evaluations
Benchmarks
Independent evaluation results, with how each score ranks among the models in the Noumen catalog.
- MiMo V2.6 Pro UltraSpeed
- MiMo V2.6 Pro
Intelligence Index
- MiMo V2.6 Pro UltraSpeed46.3
- MiMo V2.6 Pro46.3
MiMo V2.6 Pro UltraSpeed: Better than 92% of 326 scored models
Agentic work
AutomationBench-AA
Workflow automation, penalized for guardrail violations
- MiMo V2.6 Pro UltraSpeed: 58.6%Top
- MiMo V2.6 Pro: 58.6%Top
AutomationBench-AA tasks completed
Workflows finished end to end without a guardrail violation
- MiMo V2.6 Pro UltraSpeed: 25.4%Top
- MiMo V2.6 Pro: 25.4%Top
AA-Briefcasev1.1
Agentic knowledge work, rated head to head
- MiMo V2.6 Pro UltraSpeed: 1,512 EloTop
- MiMo V2.6 Pro: 1,512 EloTop
GDPval-AAv2.1
Economically valuable occupational tasks, rated head to head
- MiMo V2.6 Pro UltraSpeed: 1,683 EloTop
- MiMo V2.6 Pro: 1,683 EloTop
Document reasoning
GDP.pdf
Professional reasoning over PDF documents, all-pass rate
- MiMo V2.6 Pro UltraSpeed: 19.2%Top
- MiMo V2.6 Pro: 19.2%Top
AA-LCRv1.1
Reasoning across long documents
- MiMo V2.6 Pro UltraSpeed: 86.3%Top
- MiMo V2.6 Pro: 86.3%Top
MLCR-AA
Long-context reasoning over medical records
- MiMo V2.6 Pro UltraSpeed: 12.8%Top
- MiMo V2.6 Pro: 12.8%Top
Reasoning and knowledge
Humanity’s Last Exam
Expert-level questions across academic fields
- MiMo V2.6 Pro UltraSpeed: 49.4%Top
- MiMo V2.6 Pro: 49.4%Top
Coding
Terminal-Benchv4.0
Practical software engineering in a terminal
- MiMo V2.6 Pro UltraSpeed: 34.8%Top
- MiMo V2.6 Pro: 34.8%Top
SciCode
Scientific computing in Python
- MiMo V2.6 Pro UltraSpeed: 60.9%Top
- MiMo V2.6 Pro: 60.9%Top
Legacy evaluations
AA-LCR (unversioned)
Long-context reasoning, earlier grading
- MiMo V2.6 Pro UltraSpeed: 86.3%Top
- MiMo V2.6 Pro: 86.3%Top
Scores from Artificial Analysis, updated Oct 26, 2026. Artificial Analysis
- MiMo V2.6 Pro UltraSpeed
- MiMo V2.6 Pro
| Leaderboard | MiMo V2.6 Pro UltraSpeed | MiMo V2.6 Pro |
|---|---|---|
| Coding | Not in top 20 | #10 · 1537.6 |
| Longer Query | Not in top 20 | #17 · 1494.0 |
| English | Not in top 20 | #10 · 1495.3 |
| Expert | Not in top 20 | #11 · 1528.5 |
| Hard Prompts English | Not in top 20 | #13 · 1513.3 |
| Industry Mathematical | Not in top 20 | #17 · 1501.9 |
| Industry Software And It Services | Not in top 20 | #10 · 1528.2 |
| WebDev · Image To Webdev | Not in top 20 | #13 · 1598.3 |
| WebDev · Webdev-html | Not in top 20 | #15 · 1625.8 |
Ranks among Noumen catalog models on LMArena leaderboards. Only top-20 placements are listed.LMArena
Live routing data
Performance and reliability
Recent averages across requests routed for this model. Your own speed depends on prompt length, reasoning effort and load.
- Throughput
- 263.0 tok/s
- Faster than 91% of 254 models
- Time to first token
- 11.1 s
- Quicker than 7% of 254 models
- Prompt cache hits
- 67.0%
- About $1.46 per 1M input tokens with caching
- Request success (24h)
- 100.0%
- Reliable
Cache hits are the share of input tokens recently served from a prompt cache across all requests. They are not a forecast of your own hit rate.
- Healthy (98% or more)
- Degraded (90–98%)
- Down (under 90%)
- No requests
Developers
Use it through the API
Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.
curl https://www.noumen.xyz/api/v1/chat/completions \
-H "Authorization: Bearer $NOUMEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "xiaomi/mimo-v2.6-pro-ultraspeed",
"reasoning_effort": "none",
"messages": [{ "role": "user", "content": "Explain this stack trace." }]
}'import os
from openai import OpenAI
client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
model="xiaomi/mimo-v2.6-pro-ultraspeed",
messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)xiaomi
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