Moonshot · Frontier
Kimi K3.1 Pro Highspeed
Kimi K3.1 Pro Highspeed is the faster variant of K3.1 Pro, a multimodal reasoning model for coding, 3D creation, document analysis and multi-step tool use. It supports a 1M-token context window and text, image and video inputs. Reasoning is always enabled, with low, high and max effort levels.
- Reasoning
- Tools
- Vision
- Structured output
- Video input
- Input
- Text, Images, Video
- Output
- Text
- Reasoning effort
- low · high · max
- Discovery tier
- Frontier
Pricing
USD per 1M tokens- Input
- $4.00
- Output
- $20.00
- Cache read
- $0.20
- Cache write
- $4.00
- $8.00 for a 1-hour cache
Reference prices as published by the model provider. API example
Specifications
- Context window
- 1M
- Max output
- —
- Average output (7 days)
- 1.3K tokens
- Longer than 80% of 473 models
Side by side
Kimi K3.1 Pro Highspeed compared
Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.
| Kimi K3.1 Pro HighspeedMoonshotThis model | Kimi K2.7 Code TEEMoonshotRemove | |
|---|---|---|
| Provider | Moonshot | Moonshot |
| Discovery tier | Frontier | Open weights |
| Added | Oct 24, 2026 | Aug 15, 2026 |
| Limits | ||
| Context window | 1.05MBest | 262.14K |
| Max output | — | 65.54K |
| Average output | 1.3K tokens | 1.1K tokens |
| Pricing, USD per 1M tokens | ||
| Input | $4.00 | $0.95Best |
| Output | $20.00 | $4.00Best |
| Cache read | $0.20 | $0.19Best |
| Cache write | $4.00 | — |
| Performance | ||
| Throughput | 125.1 tok/s | — |
| Time to first token | 8.5 s | — |
| Request success (24h) | 99.8% | — |
| Benchmark indexes | ||
| Intelligence Index | 55.1Best | 25.8 |
| Coding Index | — | 60.8 |
| Capabilities | ||
| Reasoning | Yes | Yes |
| Tools | Yes | Yes |
| Vision | Yes | Yes |
| Structured output | Yes | No |
| Video input | Yes | No |
| Parallel tools | No | Yes |
| Reasoning effort | low, high, max | — |
Public evaluations
Benchmarks
Independent evaluation results, with how each score ranks among the models in the Noumen catalog.
- Kimi K3.1 Pro Highspeed
- Kimi K2.7 Code TEE
Intelligence Index
- Kimi K3.1 Pro Highspeed55.1
- Kimi K2.7 Code TEE25.8
Kimi K3.1 Pro Highspeed: Better than 99% of 326 scored models
Indexes
Coding Index
Composite of the coding evaluations
- Kimi K3.1 Pro Highspeed: —
- Kimi K2.7 Code TEE: 60.8
Agentic work
AutomationBench-AA
Workflow automation, penalized for guardrail violations
- Kimi K3.1 Pro Highspeed: 73.3%Top
- Kimi K2.7 Code TEE: 24.5%
AutomationBench-AA tasks completed
Workflows finished end to end without a guardrail violation
- Kimi K3.1 Pro Highspeed: 46.0%Top
- Kimi K2.7 Code TEE: 4.7%
AA-Briefcasev1.1
Agentic knowledge work, rated head to head
- Kimi K3.1 Pro Highspeed: 1,678 EloTop
- Kimi K2.7 Code TEE: 858 Elo
GDPval-AAv2.1
Economically valuable occupational tasks, rated head to head
- Kimi K3.1 Pro Highspeed: 1,846 EloTop
- Kimi K2.7 Code TEE: 1,038 Elo
Document reasoning
GDP.pdf
Professional reasoning over PDF documents, all-pass rate
- Kimi K3.1 Pro Highspeed: 31.4%Top
- Kimi K2.7 Code TEE: 11.2%
AA-LCRv1.1
Reasoning across long documents
- Kimi K3.1 Pro Highspeed: 86.3%Top
- Kimi K2.7 Code TEE: 79.3%
MLCR-AA
Long-context reasoning over medical records
- Kimi K3.1 Pro Highspeed: —
- Kimi K2.7 Code TEE: 12.2%
Reasoning and knowledge
Humanity’s Last Exam
Expert-level questions across academic fields
- Kimi K3.1 Pro Highspeed: 52.5%Top
- Kimi K2.7 Code TEE: 35.0%
GPQA Diamond
Graduate-level science questions
- Kimi K3.1 Pro Highspeed: —
- Kimi K2.7 Code TEE: 89.6%
IFBench
Following precise output instructions
- Kimi K3.1 Pro Highspeed: —
- Kimi K2.7 Code TEE: 63.1%
Coding
Terminal-Benchv4.0
Practical software engineering in a terminal
- Kimi K3.1 Pro Highspeed: 67.2%Top
- Kimi K2.7 Code TEE: 1.0%
SciCode
Scientific computing in Python
- Kimi K3.1 Pro Highspeed: 60.8%Top
- Kimi K2.7 Code TEE: 47.8%
Legacy evaluations
Terminal-Bench Hard
Earlier terminal task suite
- Kimi K3.1 Pro Highspeed: —
- Kimi K2.7 Code TEE: 44.7%
τ²-Bench Telecom
Tool use in a customer-support simulation
- Kimi K3.1 Pro Highspeed: —
- Kimi K2.7 Code TEE: 90.1%
AA-LCR (unversioned)
Long-context reasoning, earlier grading
- Kimi K3.1 Pro Highspeed: 86.3%Top
- Kimi K2.7 Code TEE: 79.3%
Scores from Artificial Analysis, updated Oct 26, 2026. Artificial Analysis
- Kimi K3.1 Pro Highspeed
- Kimi K2.7 Code TEE
| Leaderboard | Kimi K3.1 Pro Highspeed | Kimi K2.7 Code TEE |
|---|---|---|
| Combined | #9 · 19.9% | Not in top 20 |
Ranks among Noumen catalog models on Combined leaderboards. Only top-20 placements are listed.
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
- 125.1 tok/s
- Faster than 71% of 260 models
- Time to first token
- 8.5 s
- Quicker than 15% of 260 models
- Prompt cache hits
- 97.2%
- About $0.31 per 1M input tokens with caching
- Request success (24h)
- 99.8%
- 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": "moonshotai/kimi-k3.1-pro-highspeed",
"reasoning_effort": "low",
"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="moonshotai/kimi-k3.1-pro-highspeed",
messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)Moonshot
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