Kimi K3.1 Pro vs Qwen3.8 Max
Kimi K3.1 Pro leads the LLM Stats Score 55.1 to 50.3. Qwen3.8 Max is 1.6x cheaper per token.
Moonshot AI · Alibaba Cloud / Qwen Team · Updated for 2026
Which is better?
Kimi K3.1 Pro leads the overall LLM Stats Score 55.1 to 50.3, ranking #7 overall.
In the 5 individual benchmarks reported for both models, Kimi K3.1 Pro wins 4; this is a narrower head-to-head signal than the composite indexes.
On price, Qwen3.8 Max is roughly 1.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Kimi K3.1 Pro also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Kimi K3.1 Pro
- overall performance matters — it scores 55.1 and ranks #7 on LLM Stats
- your work emphasizes reasoning and agents — it leads those capability indexes
- you value its reported benchmark strengths — it wins 4 of 5 exact shared results
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Oct 2026
Choose Qwen3.8 Max
- cost matters — it's about 1.6x cheaper per token
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
30 reported for Kimi K3.1 Pro · 42 for Qwen3.8 Max
Kimi K3.1 Pro outperforms in 4 benchmarks (GPQA, Humanity's Last Exam, MMMU-Pro, PerceptionBench), while Qwen3.8 Max is better at 1 benchmark (Agents' Last Exam).
Kimi K3.1 Pro significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Kimi K3.1 Pro ($2.00/1M tokens) is 1.2x more expensive than Qwen3.8 Max ($1.65/1M tokens).
For output processing, Kimi K3.1 Pro ($10.00/1M tokens) is 2.0x more expensive than Qwen3.8 Max ($4.95/1M tokens).
In conclusion, Kimi K3.1 Pro is more expensive than Qwen3.8 Max.*
* Using a 3:1 ratio of input to output tokens
Model Size
Parameter count comparison
Kimi K3.1 Pro has 400.0B more parameters than Qwen3.8 Max, making it 16.7% larger.
Context Window
Maximum input and output token capacity
Kimi K3.1 Pro accepts 1,048,576 input tokens compared to Qwen3.8 Max's 256,000 tokens. Kimi K3.1 Pro can generate longer responses up to 1,048,576 tokens, while Qwen3.8 Max is limited to 256,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Kimi K3.1 Pro and Qwen3.8 Max support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Kimi K3.1 Pro
Qwen3.8 Max
License
Usage and distribution terms
Kimi K3.1 Pro is licensed under Kimi K3.1 Pro License, while Qwen3.8 Max uses Qwen3.8-Max License.
License differences may affect how you can use these models in commercial or open-source projects.
Kimi K3.1 Pro License
Open weights
Qwen3.8-Max License
Open weights
Release Timeline
When each model was launched
Kimi K3.1 Pro was released on 2026-10-23, while Qwen3.8 Max was released on 2026-08-02.
Kimi K3.1 Pro is 3 months newer than Qwen3.8 Max.
Oct 23, 2026
2 weeks ago
2mo newerAug 2, 2026
3 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Kimi K3.1 Pro is available from Fireworks, Moonshot AI, Together. Qwen3.8 Max is available from DeepInfra, Fireworks, Novita, Together.
Kimi K3.1 Pro
Qwen3.8 Max
Outputs Comparison
Judge for yourself.
Run your own prompts against Kimi K3.1 Pro and Qwen3.8 Max side-by-side, then vote on the output you prefer.
FAQ
Common questions about Kimi K3.1 Pro vs Qwen3.8 Max.