Gemini 2.5 Pro
Google·Mar 2025reasoningproprietary
70.9
modhub Index
Gemini 2.5 Pro carried Google through most of 2025 as a dependable flagship with thinking built in, a 1M-token context and strong multimodal chops. Two generations on, it is no longer a frontier pick, but an enormous amount of production traffic still runs on it and its pricing tiers are well understood. Teams on 2.5 Pro today typically migrate to Gemini 3.1 Pro or 3.5 Flash.
Benchmark results
Where it shines
- Proven stability across a year of production use
- Strong long-context video and document analysis
- Cheaper than Gemini 3 Pro for moderate workloads
Alternatives to Gemini 2.5 Pro
OpenAI's August 2025 unified flagship that merged the GPT and o-series reasoning lines into one model with selectable effort.
OpenAI's dedicated 2025 reasoning model that pioneered thinking-with-images and agentic tool use within chain-of-thought.
The sparse-attention release that halved DeepSeek's already-lowest-in-class prices while keeping GPT-class quality.
A trillion-parameter open reasoning agent that can chain 200–300 tool calls — the open-weights agentic standout of late 2025.
Frequently asked questions
- How much does the Gemini 2.5 Pro API cost?
- Gemini 2.5 Pro costs $1.25 per million input tokens and $10 per million output tokens, with cached input at $0.31 per million. A workload of 10M input and 1.5M output tokens per month costs about $27.50.
- What is the context window of Gemini 2.5 Pro?
- Gemini 2.5 Pro supports a context window of 1,048,576 tokens (1.0M), with up to 66K output tokens per response.
- Is Gemini 2.5 Pro open source?
- No — Gemini 2.5 Pro is a proprietary model available through Google's API and partner platforms.
- What are the best alternatives to Gemini 2.5 Pro?
- The closest alternatives by overall capability are GPT-5, OpenAI o3, DeepSeek V3.2, Kimi K2 Thinking. See the comparison pages for detailed head-to-head breakdowns.