Kimi-k1.5 vs o1-pro
o1-pro significantly outperforms across most benchmarks.
Moonshot AI · OpenAI · Updated for 2026
Which is better?
Kimi-k1.5 outperforms in 0 benchmarks, while o1-pro is better at 1 benchmark (AIME 2024). o1-pro significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose Kimi-k1.5
- you want the most recent training data — it shipped Jan 2025
Choose o1-pro
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
Kimi-k1.5 outperforms in 0 benchmarks, while o1-pro is better at 1 benchmark (AIME 2024).
o1-pro significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Input Capabilities
Supported data types and modalities
Both Kimi-k1.5 and o1-pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Kimi-k1.5
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-k1.5 was released on 2025-01-20, while o1-pro was released on 2024-12-17.
Kimi-k1.5 is 1 month newer than o1-pro.
Jan 20, 2025
1.6 years ago
1mo 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-k1.5'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-k1.5's cutoff date.
—
Sep 2023
Outputs Comparison
Judge for yourself.
Run your own prompts against Kimi-k1.5 and o1-pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about Kimi-k1.5 vs o1-pro.