Model Comparison

Grok Imagine Image Pro vs Gemini 3.1 Flash ImageWhich is better in 2026?

Comparing Grok Imagine Image Pro and Gemini 3.1 Flash Image across benchmarks, pricing, and capabilities.

Verdict: Grok Imagine Image Pro vs Gemini 3.1 Flash Image — which is better?

Grok Imagine Image Pro (by xAI) and Gemini 3.1 Flash Image (by Google) 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.

Grok Imagine Image Pro also accepts a larger context window (131,072 input tokens), making it the stronger choice for long documents and large codebases.

Choose Grok Imagine Image Pro if…

  • you process long inputs — it offers a 131,072 token context window

Choose Gemini 3.1 Flash Image if…

  • you want the most recent training data — it shipped Feb 2026
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Arena Performance

Human preference votes

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Grok Imagine Image Pro

Proprietary

Closed source

Gemini 3.1 Flash Image

Proprietary

Closed source

Release Timeline

When each model was launched

Grok Imagine Image Pro was released on 2026-02-01, while Gemini 3.1 Flash Image was released on 2026-02-26.

Gemini 3.1 Flash Image is 1 month newer than Grok Imagine Image Pro.

Grok Imagine Image Pro

Feb 1, 2026

4 months ago

Gemini 3.1 Flash Image

Feb 26, 2026

3 months ago

3w newer

Provider Availability

Grok Imagine Image Pro is available from xAI. Gemini 3.1 Flash Image is available from Google.

Grok Imagine Image Pro

xai logo
xAI

Gemini 3.1 Flash Image

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $30.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

xAI
Larger context window (131,072 tokens)
Google
Supports multimodal inputs

Detailed Comparison

AI Model Comparison Table
Feature
xAI
Grok Imagine Image Pro
Google
Gemini 3.1 Flash Image

FAQ

Common questions about Grok Imagine Image Pro vs Gemini 3.1 Flash Image.

Which is better, Grok Imagine Image Pro or Gemini 3.1 Flash Image?

Grok Imagine Image Pro (xAI) and Gemini 3.1 Flash Image (Google) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

What are the context window sizes for Grok Imagine Image Pro and Gemini 3.1 Flash Image?

Grok Imagine Image Pro supports 131K tokens and Gemini 3.1 Flash Image supports 66K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Grok Imagine Image Pro and Gemini 3.1 Flash Image?

Key differences include context window (131K vs 66K), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok Imagine Image Pro and Gemini 3.1 Flash Image?

Grok Imagine Image Pro is developed by xAI and Gemini 3.1 Flash Image is developed by Google.

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