Gemini 1.5 Flash vs Kimi-k1.5
Kimi-k1.5 significantly outperforms across most benchmarks.
Google · Moonshot AI · Updated for 2026
Which is better?
Gemini 1.5 Flash outperforms in 0 benchmarks, while Kimi-k1.5 is better at 3 benchmarks (MathVista, MMLU, MMMU). Kimi-k1.5 significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose Gemini 1.5 Flash
- you want predictable pricing at $0.15/M input and $0.60/M output
Choose Kimi-k1.5
- you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
- you want the most recent training data — it shipped Jan 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 1.5 Flash outperforms in 0 benchmarks, while Kimi-k1.5 is better at 3 benchmarks (MathVista, MMLU, MMMU).
Kimi-k1.5 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Context Window
Maximum input and output token capacity
Only Gemini 1.5 Flash specifies input context (1,048,576 tokens). Only Gemini 1.5 Flash specifies output context (8,192 tokens).
Input Capabilities
Supported data types and modalities
Both Gemini 1.5 Flash and Kimi-k1.5 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 1.5 Flash
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
Gemini 1.5 Flash was released on 2024-05-01, while Kimi-k1.5 was released on 2025-01-20.
Kimi-k1.5 is 9 months newer than Gemini 1.5 Flash.
May 1, 2024
2.3 years ago
Jan 20, 2025
1.6 years ago
8mo newerKnowledge Cutoff
When training data ends
Gemini 1.5 Flash has a documented knowledge cutoff of 2023-11-01, while Kimi-k1.5's cutoff date is not specified.
We can confirm Gemini 1.5 Flash's training data extends to 2023-11-01, but cannot make a direct comparison without Kimi-k1.5's cutoff date.
Nov 2023
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Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 1.5 Flash and Kimi-k1.5 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 1.5 Flash vs Kimi-k1.5.