Gemini 2.5 Flash vs Gemini 2.5 Pro
Pricing, benchmarks, and use case comparison
Quick take
- •Gemini 2.5 Flash is meaningfully stronger at speed (90 vs 65 on our capability index).
- •Gemini 2.5 Pro is meaningfully stronger at reasoning (88 vs 76).
- •Gemini 2.5 Flash is 76% cheaper on input tokens, which compounds fast on high-volume or agentic workloads.
Specs comparison
| Gemini 2.5 Flash | Gemini 2.5 Pro | |
|---|---|---|
| Provider | Google DeepMind | Google DeepMind |
| Type | Closed source | Closed source |
| Context window | 1,048,576 tokens (1M) input; up to 65,535 output | 1,048,576 tokens (1M) input; up to 65K output |
| Input / 1M tokens | ✓$0.30 | $1.25 |
| Output / 1M tokens | $2.50 | $10.00 |
| Release date | 2025-06 | 2025-06 |
Benchmarks
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Pro |
|---|---|---|
| Context window | 1M tokens | 1M tokens |
| Input price | $0.30/1M | - |
| Pricing tier break | - | 200K tokens |
Scores sourced from official provider release posts and independent benchmark aggregators.
Which should you choose?
Choose Gemini 2.5 Flash if...
- →High-volume, latency-sensitive production workloads
- →Chatbots, extraction, classification, and summarization at scale
- →You need decent reasoning but must control costs
Choose Gemini 2.5 Pro if...
- →Complex reasoning, analysis, or STEM tasks that benefit from a thinking model
- →Processing very long inputs (long documents, large repos)
- →Multimodal tasks needing high quality