Kimi K2.8 Preview vs o1-pro
Comparing Kimi K2.8 Preview and o1-pro across benchmarks, pricing, and capabilities.
Moonshot AI · OpenAI · Updated for 2026
Which is better?
Kimi K2.8 Preview and o1-pro trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Kimi K2.8 Preview
- you want the most recent training data — it shipped Sep 2026
Choose o1-pro
- you are already invested in the OpenAI ecosystem
At a glance
The differences that matter most.
Individual benchmarks
0 reported for Kimi K2.8 Preview · 2 for o1-pro
Kimi K2.8 Preview and o1-prodon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only Kimi K2.8 Preview specifies input context (1,048,576 tokens).
Input capabilities
Documented input modalities across available providers
Both Kimi K2.8 Preview and o1-pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Kimi K2.8 Preview
o1-pro
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Kimi K2.8 Preview was released on 2026-09-11, while o1-pro was released on 2024-12-17.
Kimi K2.8 Preview is 21 months newer than o1-pro.
Sep 11, 2026
3 days ago
1.7yr newerDec 17, 2024
1.7 years ago
Knowledge Cutoff
When training data ends
o1-pro has a documented knowledge cutoff of 2023-09-30, while Kimi K2.8 Preview's cutoff date is not specified.
We can confirm o1-pro's training data extends to 2023-09-30, but cannot make a direct comparison without Kimi K2.8 Preview's cutoff date.
—
Sep 2023
Outputs Comparison
Judge for yourself.
Run your own prompts against Kimi K2.8 Preview and o1-pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about Kimi K2.8 Preview vs o1-pro.