Which is better for coding — Gemini 3 Flash or GPT-5.1 Medium?

Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.

Which model is cheaper — Gemini 3 Flash or GPT-5.1 Medium?

Gemini 3 Flash is cheaper for input: $0.50 per 1M tokens vs $1.00.

Which has a larger context window — Gemini 3 Flash or GPT-5.1 Medium?

Gemini 3 Flash supports a larger context: 1,048,576 tokens vs 256,000.

Gemini 3 Flash vs GPT-5.1 Medium: Specs & Benchmark Comparison

Characteristic	Gemini 3 Flash	GPT-5.1 Medium
Company	Google	OpenAI
Release Date	December 16, 2025	November 11, 2025
Parameters	—	—
Multimodal	Yes	Yes
Context (input)	1.0M	256K
Context (output)	66K	64K
Input Price / 1M	$0.50	$1.00
Output Price / 1M	$3.00	$4.00
Average Score	0.9	1.0
Benchmarks
AIME 2025	1.0	1.0

Visual Benchmark Comparison

Gemini 3 Flash

GPT-5.1 Medium

AIME 20251.0 vs 1.0

1.0

Verdict

Gemini 3 Flash leads in 3 out of 4 comparison categories.

Overall Performance

Both models show comparable average scores: Gemini 3 Flash — 0.9, GPT-5.1 Medium — 1.0.

API Cost

Gemini 3 Flash is 1.4x cheaper: input $0.50/1M vs $1.00/1M tokens.

Context Window

Gemini 3 Flash supports a larger context: 1M vs 256K tokens.

Recency

Gemini 3 Flash is newer: released 12/16/2025 vs 11/11/2025.

More About These Models

Gemini 3 Flash

Google — specs, benchmarks, API

GPT-5.1 Medium

OpenAI — specs, benchmarks, API

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All model comparisons →

The Gemini 3 Flash and GPT-5.1 Medium comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Gemini 3 Flash or GPT-5.1 Medium page. See also the complete list of AI model comparisons.