Model Comparison

Gemini 1.5 Pro vs Kimi K2-Instruct-0905Which is better in 2026?

Kimi K2-Instruct-0905 significantly outperforms across most benchmarks.

Verdict: Gemini 1.5 Pro vs Kimi K2-Instruct-0905 — which is better?

Gemini 1.5 Pro (by Google) and Kimi K2-Instruct-0905 (by Moonshot AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Gemini 1.5 Pro outperforms in 0 benchmarks, while Kimi K2-Instruct-0905 is better at 3 benchmarks (GPQA, MMLU, MMLU-Pro). Kimi K2-Instruct-0905 significantly outperforms across most benchmarks.

Choose Gemini 1.5 Pro if…

  • you want predictable pricing at $2.50/M input and $10.00/M output

Choose Kimi K2-Instruct-0905 if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped Sep 2025
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini 1.5 Pro outperforms in 0 benchmarks, while Kimi K2-Instruct-0905 is better at 3 benchmarks (GPQA, MMLU, MMLU-Pro).

Kimi K2-Instruct-0905 significantly outperforms across most benchmarks.

Sat Jun 27 2026 • llm-stats.com

Arena Performance

Human preference votes

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-Instruct-0905
Input- tokens
Output- tokens
Sat Jun 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Pro supports multimodal inputs, whereas Kimi K2-Instruct-0905 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-Instruct-0905

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 1.5 Pro is licensed under a proprietary license, while Kimi K2-Instruct-0905 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-Instruct-0905

MIT

Open weights

Release Timeline

When each model was launched

Gemini 1.5 Pro was released on 2024-05-01, while Kimi K2-Instruct-0905 was released on 2025-09-05.

Kimi K2-Instruct-0905 is 16 months newer than Gemini 1.5 Pro.

Gemini 1.5 Pro

May 1, 2024

2.2 years ago

Kimi K2-Instruct-0905

Sep 5, 2025

9 months ago

1.3yr newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Pro has a documented knowledge cutoff of 2023-11-01, while Kimi K2-Instruct-0905'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-Instruct-0905's cutoff date.

Gemini 1.5 Pro

Nov 2023

Kimi K2-Instruct-0905

—

Outputs Comparison

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Key Takeaways

Google
Larger context window (2,097,152 tokens)
Supports multimodal inputs
Moonshot AI
Has open weights
Higher GPQA score (75.1% vs 59.1%)
Higher MMLU score (89.5% vs 85.9%)
Higher MMLU-Pro score (81.1% vs 75.8%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini 1.5 Pro and Kimi K2-Instruct-0905 side-by-side, then vote on the output you prefer.

Gemini 1.5 Pro
✓ Preferred
Kimi K2-Instruct-0905
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini 1.5 Pro
Moonshot AI
Kimi K2-Instruct-0905

FAQ

Common questions about Gemini 1.5 Pro vs Kimi K2-Instruct-0905.

Which is better, Gemini 1.5 Pro or Kimi K2-Instruct-0905?

Kimi K2-Instruct-0905 significantly outperforms across most benchmarks. Gemini 1.5 Pro is made by Google and Kimi K2-Instruct-0905 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-Instruct-0905 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-Instruct-0905 scores MATH-500: 97.4%, MMLU-Redux: 92.7%, IFEval: 89.8%, AutoLogi: 89.5%, MMLU: 89.5%.

What are the context window sizes for Gemini 1.5 Pro and Kimi K2-Instruct-0905?

Gemini 1.5 Pro supports 2.1M tokens and Kimi K2-Instruct-0905 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-Instruct-0905?

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-Instruct-0905?

Gemini 1.5 Pro is developed by Google and Kimi K2-Instruct-0905 is developed by Moonshot AI.

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