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Gemini 1.5 Pro vs Kimi K2 Base

Gemini 1.5 Pro has a slight edge in benchmark performance.

Google · Moonshot AI · Updated for 2026

Which is better?

Gemini 1.5 Pro outperforms in 3 benchmarks (GPQA, MATH, MMLU-Pro), while Kimi K2 Base is better at 2 benchmarks (GSM8k, MMLU). Gemini 1.5 Pro has a slight edge in benchmark performance.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Gemini 1.5 Pro

  • you want the strongest raw capability — it leads on 3 of 5 shared benchmarks

Choose Kimi K2 Base

  • you want the most recent training data — it shipped Jul 2025
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Gemini 1.5 Pro
Google
Kimi K2 Base
Moonshot AI
Benchmark wins
3 of 5
2 of 5
Input price
$2.50 / M
— / M
Output price
$10.00 / M
— / M
Context window
2,097,152
—
Released
May 2024
Jul 2025
License
Proprietary
MIT

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Gemini 1.5 Pro outperforms in 3 benchmarks (GPQA, MATH, MMLU-Pro), while Kimi K2 Base is better at 2 benchmarks (GSM8k, MMLU).

Gemini 1.5 Pro has a slight edge in benchmark performance.

Tue Aug 25 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only Gemini 1.5 Pro specifies input context (2,097,152 tokens). Only Gemini 1.5 Pro specifies output context (8,192 tokens).

Google
Gemini 1.5 Pro
Input2,097,152 tokens
Output8,192 tokens
Moonshot AI
Kimi K2 Base
Input- tokens
Output- tokens
Tue Aug 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Pro supports multimodal inputs, whereas Kimi K2 Base does not.

Gemini 1.5 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 1.5 Pro

Text
Images
Audio
Video

Kimi K2 Base

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 1.5 Pro is licensed under a proprietary license, while Kimi K2 Base uses MIT.

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

Gemini 1.5 Pro

Proprietary

Closed source

Kimi K2 Base

MIT

Open weights

Release Timeline

When each model was launched

Gemini 1.5 Pro was released on 2024-05-01, while Kimi K2 Base was released on 2025-07-11.

Kimi K2 Base is 15 months newer than Gemini 1.5 Pro.

Gemini 1.5 Pro

May 1, 2024

2.3 years ago

Kimi K2 Base

Jul 11, 2025

1.1 years ago

1.2yr newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Pro has a documented knowledge cutoff of 2023-11-01, while Kimi K2 Base's cutoff date is not specified.

We can confirm Gemini 1.5 Pro's training data extends to 2023-11-01, but cannot make a direct comparison without Kimi K2 Base's cutoff date.

Gemini 1.5 Pro

Nov 2023

Kimi K2 Base

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 1.5 Pro and Kimi K2 Base side-by-side, then vote on the output you prefer.

Gemini 1.5 Pro
✓ Preferred
Kimi K2 Base
Open in Playground

FAQ

Common questions about Gemini 1.5 Pro vs Kimi K2 Base.

Which is better, Gemini 1.5 Pro or Kimi K2 Base?

Gemini 1.5 Pro has a slight edge in benchmark performance. Gemini 1.5 Pro is made by Google and Kimi K2 Base is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 1.5 Pro compare to Kimi K2 Base in benchmarks?

Gemini 1.5 Pro scores XSTest: 98.8%, FLEURS: 93.3%, HellaSwag: 93.3%, GSM8k: 90.8%, BIG-Bench Hard: 89.2%. Kimi K2 Base scores C-Eval: 92.5%, GSM8k: 92.1%, MMLU-redux-2.0: 90.2%, MMLU: 87.8%, TriviaQA: 85.1%.

What are the context window sizes for Gemini 1.5 Pro and Kimi K2 Base?

Gemini 1.5 Pro supports 2.1M tokens and Kimi K2 Base supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 1.5 Pro and Kimi K2 Base?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 1.5 Pro and Kimi K2 Base?

Gemini 1.5 Pro is developed by Google and Kimi K2 Base is developed by Moonshot AI.

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