Gemini 2.5 Flash vs Gemini 2.5 Pro
2026 - Pricing, benchmarks, and use case comparison
Quick take
- •Gemini 2.5 Flash is 94% cheaper on input tokens - better for high-volume workloads.
- •Both models come from Google DeepMind. Gemini 2.5 Flash targets higher capability; Gemini 2.5 Pro is the faster, cheaper tier.
Specs comparison
| Gemini 2.5 Flash | Gemini 2.5 Pro | |
|---|---|---|
| Provider | Google DeepMind | Google DeepMind |
| Type | Closed source | Closed source |
| Context window | 1M | 1M |
| Input / 1M tokens | ✓$0.075 | $1.25 |
| Output / 1M tokens | $0.30 | $10.00 |
| Release date | 2025-05 | 2025-03 |
Benchmarks
| Benchmark | Gemini 2.5 Flash | Gemini 2.5 Pro |
|---|---|---|
| MMLU | ~89% | 90.9% |
| HumanEval | ~85% | - |
| GPQA Diamond | - | 86.4% |
| SWE-bench Verified | - | 63.2% |
Scores sourced from official provider release posts.
Strengths
Gemini 2.5 Flash
- ✓Exceptional price-to-performance ratio
- ✓1M context at near-commodity pricing
- ✓Multimodal support at low cost
- ✓Fast inference latency
- ✓Strong summarization and classification
Gemini 2.5 Pro
- ✓Largest commercial context window (1M tokens)
- ✓Top benchmark scores on science and math
- ✓Strong multimodal: video, audio, images
- ✓Competitive pricing for the capability tier
- ✓Native Google Search and code execution tools
Which should you choose?
Choose Gemini 2.5 Flash if you need...
- →High-volume, long-context tasks
- →Cost-sensitive production workloads
- →Document and media summarization
- →Retrieval-augmented pipelines
Choose Gemini 2.5 Pro if you need...
- →Very long document analysis
- →Video and multimodal understanding
- →Scientific research tasks
- →Large codebase comprehension