Model Comparison

Gemini 3 Flash vs Kimi K2.5

Gemini 3 Flash shows notably better performance in the majority of benchmarks. Kimi K2.5 is 1.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

9 benchmarks

Gemini 3 Flash outperforms in 6 benchmarks (AIME 2025, CharXiv-R, GPQA, MMMU-Pro, SWE-Bench Verified, VideoMMMU), while Kimi K2.5 is better at 3 benchmarks (Humanity's Last Exam, OmniDocBench 1.5, Terminal-Bench 2.0).

Gemini 3 Flash shows notably better performance in the majority of benchmarks.

Thu Apr 16 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Kimi K2.5 costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 1.2x cheaper than Kimi K2.5 ($0.60/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 1.2x more expensive than Kimi K2.5 ($2.50/1M tokens).

In conclusion, Gemini 3 Flash is more expensive than Kimi K2.5.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Apr 16 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
Moonshot AI
Kimi K2.5
Input tokens$0.60
Output tokens$2.50
Best providerFireworks
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Context Window

Maximum input and output token capacity

Gemini 3 Flash accepts 1,000,000 input tokens compared to Kimi K2.5's 262,100 tokens. Kimi K2.5 can generate longer responses up to 262,100 tokens, while Gemini 3 Flash is limited to 65,536 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
Moonshot AI
Kimi K2.5
Input262,100 tokens
Output262,100 tokens
Thu Apr 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and Kimi K2.5 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 3 Flash

Text
Images
Audio
Video

Kimi K2.5

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 3 Flash is licensed under a proprietary license, while Kimi K2.5 uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini 3 Flash

Proprietary

Closed source

Kimi K2.5

MIT

Open weights

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while Kimi K2.5 was released on 2026-01-27.

Kimi K2.5 is 1 month newer than Gemini 3 Flash.

Gemini 3 Flash

Dec 17, 2025

4 months ago

Kimi K2.5

Jan 27, 2026

2 months ago

1mo newer

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while Kimi K2.5's cutoff date is not specified.

We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without Kimi K2.5's cutoff date.

Gemini 3 Flash

Jan 2025

Kimi K2.5

—

Provider Availability

Gemini 3 Flash is available from Google. Kimi K2.5 is available from Fireworks.

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M

Kimi K2.5

fireworks logo
Fireworks
Input Price:Input: $0.60/1MOutput Price:Output: $2.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,000,000 tokens)
Less expensive input tokens
Higher AIME 2025 score (99.7% vs 96.1%)
Higher CharXiv-R score (80.3% vs 77.5%)
Higher GPQA score (90.4% vs 87.6%)
Higher MMMU-Pro score (81.2% vs 78.5%)
Higher SWE-Bench Verified score (78.0% vs 76.8%)
Higher VideoMMMU score (86.9% vs 86.6%)
Moonshot AI
Less expensive output tokens
Has open weights
Higher Humanity's Last Exam score (50.2% vs 43.5%)
Higher OmniDocBench 1.5 score (88.8% vs 12.1%)
Higher Terminal-Bench 2.0 score (50.8% vs 47.6%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
Moonshot AI
Kimi K2.5

FAQ

Common questions about Gemini 3 Flash vs Kimi K2.5

Gemini 3 Flash shows notably better performance in the majority of benchmarks. Gemini 3 Flash is made by Google and Kimi K2.5 is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. Kimi K2.5 scores AIME 2025: 96.1%, HMMT 2025: 95.4%, InfoVQAtest: 92.6%, OCRBench: 92.3%, MathVista-Mini: 90.1%.
Gemini 3 Flash is 1.2x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. Kimi K2.5 costs $0.60/M input and $2.50/M output via fireworks.
Gemini 3 Flash supports 1.0M tokens and Kimi K2.5 supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (1.0M vs 262K), input pricing ($0.50 vs $0.60/M), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.
Gemini 3 Flash is developed by Google and Kimi K2.5 is developed by Moonshot AI.