Gemini 2.5 Pro vs OpenAI o4-mini

Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.

Gemini 2.5 Pro

Google · Mar 2025

70.9

Google's 2025 workhorse flagship — first mainstream thinking model with a 1M context, still widely deployed.

OpenAI o4-mini

OpenAI · Apr 2025

80.9

A compact reasoning model that punched far above its price on math — 92.7% on AIME 2025 at $1.10 per million input tokens.

The verdict

OpenAI o4-mini wins 3 of the 4 benchmarks these models share, against 1 for Gemini 2.5 Pro. OpenAI o4-mini is about 1.8x cheaper per blended million tokens (3:1 input:output mix). Gemini 2.5 Pro also takes 1.0M of context versus 200K for OpenAI o4-mini.

Benchmark head-to-head 13

SWE-bench Verified
63.8%68.1%
Gemini 2.5 ProOpenAI o4-mini
GPQA Diamond
86.4%81.4%
Gemini 2.5 ProOpenAI o4-mini
AIME 2025
88%92.7%
Gemini 2.5 ProOpenAI o4-mini
MMMU
~79.6%81.6%
Gemini 2.5 ProOpenAI o4-mini

Specs & pricing

Gemini 2.5 ProOpenAI o4-mini
modhub Index70.980.9
Input price / 1M$1.25$1.1
Output price / 1M$10$4.4
Context window1.0M200K
Max output66K100K
Open weightsnono
Reasoning modelyesyes
Multimodal inputtext, image, audio, videotext, image
Knowledge cutoffJan 2025May 2024
ReleasedMar 2025Apr 2025
Example monthly cost*$27.50$17.60

* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.

Frequently asked questions

Which is better, Gemini 2.5 Pro or OpenAI o4-mini?
OpenAI o4-mini wins 3 of the 4 benchmarks these models share, against 1 for Gemini 2.5 Pro. OpenAI o4-mini is about 1.8x cheaper per blended million tokens (3:1 input:output mix). Gemini 2.5 Pro also takes 1.0M of context versus 200K for OpenAI o4-mini.
Which is cheaper, Gemini 2.5 Pro or OpenAI o4-mini?
Gemini 2.5 Pro costs $1.25/$10 per million input/output tokens, while OpenAI o4-mini costs $1.1/$4.4. For a typical workload of 10M input and 1.5M output tokens per month, that's $27.50 versus $17.60.
Which model is better for coding, Gemini 2.5 Pro or OpenAI o4-mini?
On SWE-bench Verified — the standard agentic-coding benchmark — OpenAI o4-mini scores 68.1% versus 63.8% for Gemini 2.5 Pro, making OpenAI o4-mini the stronger pick for coding agents.

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