ModelRefs / Gemini 2.5 Pro vs o3 Pro
Gemini 2.5 Pro vs o3 Pro
Gemini 2.5 Pro vs o3 Pro: side-by-side benchmarks, pricing, context windows, coding ability and deployment. Pick the right model for your stack.
Overview
Gemini 2.5 Pro: Gemini 2.5 Pro is Google DeepMind's experimental thinking model with a 2M-token multimodal context window, released in March 2025. It topped the LMSys Chatbot Arena leaderboard at launch and introduced adaptive reasoning budgets that balance response quality against latency.
o3 Pro: o3 Pro is OpenAI's highest-capability reasoning model, applying extended compute at inference time to solve complex scientific, mathematical, and programming problems. It achieved the highest published scores on ARC-AGI-2 and competitive programming benchmarks at its June 2025 release.
Context window: Gemini 2.5 Pro accepts up to 2,000,000 tokens, o3 Pro up to 200,000. Confirm the limit for your specific deployment channel before relying on it.
Gemini 2.5 Pro vs o3 Pro at a glance
| Attribute | Gemini 2.5 Pro | o3 Pro |
|---|---|---|
| Provider | OpenAI | |
| Released | 2025-06-17 | 2025-06-10 |
| Context window | 2,000,000 tokens | 200,000 tokens |
| Input price | $1.25/M tokens | $20/M tokens |
| Output price | $10/M tokens | $80/M tokens |
| Licence | Proprietary | Proprietary |
| Self-hostable | No, hosted only | No, hosted only |
| Modalities | text, vision, audio, video | text, vision |
Where they differ most
- Coding: Gemini 2.5 Pro 66%, o3 Pro 85%. o3 Pro leads on this dimension.
Capability scores are ModelRefs' own derived signals, not vendor claims or benchmark results. Validate against your own workload before relying on them.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to Gemini 2.5 Pro vs o3 Pro.
Frequently asked questions
Which is better, Gemini 2.5 Pro or o3 Pro?
Gemini 2.5 Pro and o3 Pro target different workloads — see the benchmark and pricing tables for a side-by-side answer.
Is Gemini 2.5 Pro cheaper than o3 Pro?
Compare $0.00125 vs $0.0200 on this page.