Grok-1.5 vs Kimi-k1.5
Kimi-k1.5 leads the LLM Stats Score 17.2 to -2.6.
xAI · Moonshot AI · Updated for 2026
Which is better?
Kimi-k1.5 leads the overall LLM Stats Score 17.2 to -2.6, ranking #226 overall.
In the 3 individual benchmarks reported for both models, Kimi-k1.5 wins 3; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Grok-1.5
- you are already invested in the xAI ecosystem
Choose Kimi-k1.5
- overall performance matters — it scores 17.2 and ranks #226 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 3 of 3 exact shared results
- you want the most recent training data — it shipped Jan 2025
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
9 reported for Grok-1.5 · 9 for Kimi-k1.5
Grok-1.5 outperforms in 0 benchmarks, while Kimi-k1.5 is better at 3 benchmarks (MathVista, MMLU, MMMU).
Kimi-k1.5 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Input capabilities
Documented input modalities across available providers
Kimi-k1.5 supports multimodal inputs, whereas Grok-1.5 does not.
Kimi-k1.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Grok-1.5
Kimi-k1.5
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
Grok-1.5 was released on 2024-03-28, while Kimi-k1.5 was released on 2025-01-20.
Kimi-k1.5 is 10 months newer than Grok-1.5.
Mar 28, 2024
2.5 years ago
Jan 20, 2025
1.7 years ago
9mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-1.5 and Kimi-k1.5 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-1.5 vs Kimi-k1.5.