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
70.9Google · Mar 2025
Google's 2025 workhorse flagship — first mainstream thinking model with a 1M context, still widely deployed.
OpenAI o4-mini
80.9OpenAI · Apr 2025
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 1–3
Specs & pricing
| Gemini 2.5 Pro | OpenAI o4-mini | |
|---|---|---|
| modhub Index | 70.9 | 80.9 |
| Input price / 1M | $1.25 | $1.1 |
| Output price / 1M | $10 | $4.4 |
| Context window | 1.0M | 200K |
| Max output | 66K | 100K |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image, audio, video | text, image |
| Knowledge cutoff | Jan 2025 | May 2024 |
| Released | Mar 2025 | Apr 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.
More comparisons
Gemini 2.5 Pro vs GPT-5.5OpenAI o4-mini vs GPT-5.5Gemini 2.5 Pro vs GPT-5.2OpenAI o4-mini vs GPT-5.2Gemini 2.5 Pro vs GPT-5.1OpenAI o4-mini vs GPT-5.1Gemini 2.5 Pro vs GPT-5OpenAI o4-mini vs GPT-5Gemini 2.5 Pro vs GPT-5 miniOpenAI o4-mini vs GPT-5 miniGemini 2.5 Pro vs OpenAI o3OpenAI o4-mini vs OpenAI o3