Model Comparison

GPT-5.4 vs Gemini 3.1 Flash ImageWhich is better in 2026?

Comparing GPT-5.4 and Gemini 3.1 Flash Image across benchmarks, pricing, and capabilities.

Verdict: GPT-5.4 vs Gemini 3.1 Flash Image — which is better?

GPT-5.4 (by OpenAI) 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, GPT-5.4 is roughly 1.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.4 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-5.4 if…

  • cost matters — it's about 1.4x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Mar 2026

Choose Gemini 3.1 Flash Image if…

  • you want predictable pricing at $0.50/M input and $30.00/M output
AI Model Comparison Table
Feature
OpenAI
GPT-5.4
Google
Gemini 3.1 Flash Image

FAQ

Common questions about GPT-5.4 vs Gemini 3.1 Flash Image.

Which is better, GPT-5.4 or Gemini 3.1 Flash Image?

GPT-5.4 (OpenAI) 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 GPT-5.4 compare to Gemini 3.1 Flash Image in benchmarks?

GPT-5.4 scores Tau2 Telecom: 98.9%, ARC-AGI: 93.7%, Graphwalks BFS <128k: 93.0%, GPQA: 92.8%, Graphwalks parents <128k: 89.8%.

Is GPT-5.4 cheaper than Gemini 3.1 Flash Image?

Gemini 3.1 Flash Image is 5.0x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. Gemini 3.1 Flash Image costs $0.50/M input and $30.00/M output via google.

What are the context window sizes for GPT-5.4 and Gemini 3.1 Flash Image?

GPT-5.4 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 GPT-5.4 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.

Who makes GPT-5.4 and Gemini 3.1 Flash Image?

GPT-5.4 is developed by OpenAI and Gemini 3.1 Flash Image is developed by Google.

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