Model Comparison

Claude Opus 4.5 vs Gemini 3.1 Flash ImageWhich is better in 2026?

Comparing Claude Opus 4.5 and Gemini 3.1 Flash Image across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 4.5 vs Gemini 3.1 Flash Image — which is better?

Claude Opus 4.5 (by Anthropic) 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 Flash Image is roughly 1.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 4.5 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 4.5 if…

  • you process long inputs — it offers a 200,000 token context window

Choose Gemini 3.1 Flash Image if…

  • cost matters — it's about 1.3x cheaper per token
  • you want the most recent training data — it shipped Feb 2026
AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Google
Gemini 3.1 Flash Image

FAQ

Common questions about Claude Opus 4.5 vs Gemini 3.1 Flash Image.

Which is better, Claude Opus 4.5 or Gemini 3.1 Flash Image?

Claude Opus 4.5 (Anthropic) 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 Claude Opus 4.5 compare to Gemini 3.1 Flash Image in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%.

Is Claude Opus 4.5 cheaper than Gemini 3.1 Flash Image?

Gemini 3.1 Flash Image is 10.0x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. Gemini 3.1 Flash Image costs $0.50/M input and $30.00/M output via google.

What are the context window sizes for Claude Opus 4.5 and Gemini 3.1 Flash Image?

Claude Opus 4.5 supports 200K 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 Claude Opus 4.5 and Gemini 3.1 Flash Image?

Key differences include context window (200K vs 66K), input pricing ($5.00 vs $0.50/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Gemini 3.1 Flash Image?

Claude Opus 4.5 is developed by Anthropic and Gemini 3.1 Flash Image is developed by Google.

Related comparisons