Gemini 3.8 Flash vs Kimi K3
Gemini 3.8 Flash and Kimi K3 are closely matched at 51.8 and 54.3 on the LLM Stats Score. Gemini 3.8 Flash is 4.0x cheaper per token.
Google · Moonshot AI · Updated for 2026
Which is better?
Gemini 3.8 Flash and Kimi K3 are closely matched on the overall LLM Stats Score at 51.8 and 54.3.
In the 3 individual benchmarks reported for both models, Gemini 3.8 Flash wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, Gemini 3.8 Flash is roughly 4.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 3.8 Flash
- you value its reported benchmark strengths — it wins 2 of 3 exact shared results
- cost matters — it's about 4.0x cheaper per token
- you want the most recent training data — it shipped Sep 2026
Choose Kimi K3
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
13 reported for Gemini 3.8 Flash · 31 for Kimi K3
Gemini 3.8 Flash outperforms in 2 benchmarks (DeepSWE 1.1, Terminal-Bench 2.1), while Kimi K3 is better at 1 benchmark (CharXiv-R).
Gemini 3.8 Flash shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 3.8 Flash ($0.75/1M tokens) is 4.0x cheaper than Kimi K3 ($3.00/1M tokens).
For output processing, Gemini 3.8 Flash ($3.75/1M tokens) is 4.0x cheaper than Kimi K3 ($15.00/1M tokens).
In conclusion, Kimi K3 is more expensive than Gemini 3.8 Flash.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 1,048,576 tokens. Kimi K3 can generate longer responses up to 1,048,576 tokens, while Gemini 3.8 Flash is limited to 65,536 tokens.
Input capabilities
Documented input modalities across available providers
Both Gemini 3.8 Flash and Kimi K3 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 3.8 Flash
Kimi K3
License
Usage and distribution terms
Gemini 3.8 Flash is licensed under a proprietary license, while Kimi K3 uses Kimi K3 License.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Kimi K3 License
Open weights
Release Timeline
When each model was launched
Gemini 3.8 Flash was released on 2026-09-02, while Kimi K3 was released on 2026-07-16.
Gemini 3.8 Flash is 2 months newer than Kimi K3.
Sep 2, 2026
0 days ago
1mo newerJul 16, 2026
1 months ago
Knowledge Cutoff
When training data ends
Gemini 3.8 Flash has a documented knowledge cutoff of 2026-03-31, while Kimi K3's cutoff date is not specified.
We can confirm Gemini 3.8 Flash's training data extends to 2026-03-31, but cannot make a direct comparison without Kimi K3's cutoff date.
Mar 2026
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Provider Availability
Gemini 3.8 Flash is available from Google. Kimi K3 is available from Fireworks, Moonshot AI, Novita, Together.
Gemini 3.8 Flash
Kimi K3
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 3.8 Flash and Kimi K3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 3.8 Flash vs Kimi K3.