Model Comparison

Gemini 3.1 Pro vs Gemini 3.1 Flash ImageWhich is better in 2026?

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

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

Gemini 3.1 Pro (by Google) 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.

On price, Gemini 3.1 Pro is roughly 1.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.1 Pro also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3.1 Pro if…

  • cost matters — it's about 1.4x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window

Choose Gemini 3.1 Flash Image if…

  • you want the most recent training data — it shipped Feb 2026
AI Model Comparison Table
Feature
Google
Gemini 3.1 Pro
Google
Gemini 3.1 Flash Image

FAQ

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

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

Gemini 3.1 Pro (Google) 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.

How does Gemini 3.1 Pro compare to Gemini 3.1 Flash Image in benchmarks?

Gemini 3.1 Pro scores t2-bench: 99.3%, LiveCodeBench Pro: 96.2%, GPQA: 94.3%, MMMLU: 92.6%, BrowseComp: 85.9%.

Is Gemini 3.1 Pro cheaper than Gemini 3.1 Flash Image?

Gemini 3.1 Flash Image is 5.0x cheaper for input tokens. Gemini 3.1 Pro costs $2.50/M input and $15.00/M output via google. Gemini 3.1 Flash Image costs $0.50/M input and $30.00/M output via google.

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

Gemini 3.1 Pro supports 1.0M 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 Gemini 3.1 Pro and Gemini 3.1 Flash Image?

Key differences include context window (1.0M vs 66K), input pricing ($2.50 vs $0.50/M). See the full comparison above for benchmark-by-benchmark results.

Related comparisons