Gemini 3 Pro vs GPT-5.2
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Gemini 3 Pro
73.6Google · Nov 2025
Google's November 2025 frontier breakout — 91.9% GPQA Diamond and 37.5% HLE made it the reasoning leader of its generation.
GPT-5.2
OpenAI · Dec 2025
The December 2025 GPT-5 refresh: stronger coding and agentic skills than GPT-5.1 at a moderate price, now the value pick in OpenAI's lineup.
The verdict
GPT-5.2 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 3 Pro. Gemini 3 Pro is about 1.1x cheaper per blended million tokens (3:1 input:output mix). Gemini 3 Pro also takes 1M of context versus 400K for GPT-5.2.
Benchmark head-to-head 0–1
Specs & pricing
| Gemini 3 Pro | GPT-5.2 | |
|---|---|---|
| modhub Index | 73.6 | — |
| Input price / 1M | $2 | $1.75 |
| Output price / 1M | $12 | $14 |
| Context window | 1M | 400K |
| Max output | 66K | 128K |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image, audio, video | text, image |
| Knowledge cutoff | Jan 2025 | Aug 2025 |
| Released | Nov 2025 | Dec 2025 |
| Example monthly cost* | $38.00 | $38.50 |
* 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 3 Pro or GPT-5.2?
- GPT-5.2 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 3 Pro. Gemini 3 Pro is about 1.1x cheaper per blended million tokens (3:1 input:output mix). Gemini 3 Pro also takes 1M of context versus 400K for GPT-5.2.
- Which is cheaper, Gemini 3 Pro or GPT-5.2?
- Gemini 3 Pro costs $2/$12 per million input/output tokens, while GPT-5.2 costs $1.75/$14. For a typical workload of 10M input and 1.5M output tokens per month, that's $38.00 versus $38.50.
- Which model is better for coding, Gemini 3 Pro or GPT-5.2?
- On SWE-bench Verified — the standard agentic-coding benchmark — GPT-5.2 scores ~77.9% versus 76.2% for Gemini 3 Pro, making GPT-5.2 the stronger pick for coding agents.