Gemini 2.5 Flash vs Gemini 2.5 Pro Comparison
Comparing Gemini 2.5 Flash and Gemini 2.5 Pro across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 2.5 Flash outperforms in 1 benchmarks (MMMU), while Gemini 2.5 Pro is better at 12 benchmarks (Aider-Polyglot, Aider-Polyglot Edit, AIME 2024, AIME 2025, Global-MMLU-Lite, GPQA, Humanity's Last Exam, LiveCodeBench v5, MRCR, SimpleQA, SWE-Bench Verified, Vibe-Eval).
Gemini 2.5 Pro significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 2.5 Flash ($0.30/1M tokens) is 4.2x cheaper than Gemini 2.5 Pro ($1.25/1M tokens).
For output processing, Gemini 2.5 Flash ($2.50/1M tokens) is 4.0x cheaper than Gemini 2.5 Pro ($10.00/1M tokens).
In conclusion, Gemini 2.5 Pro is more expensive than Gemini 2.5 Flash.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 1,048,576 tokens. Both models can generate responses up to 65,536 tokens.
Input Capabilities
Supported data types and modalities
Both Gemini 2.5 Flash and Gemini 2.5 Pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 2.5 Flash
Gemini 2.5 Pro
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Both models were released on 2025-05-20.
They likely represent similar generations of model development.
May 20, 2025
9 months ago
May 20, 2025
9 months ago
Knowledge Cutoff
When training data ends
Both models have the same knowledge cutoff date of 2025-01-31.
They should have similar awareness of historical events and information up to this date.
Jan 2025
Jan 2025
Provider Availability
Gemini 2.5 Flash is available from Google. Gemini 2.5 Pro is available from Google. The availability of providers can affect quality of the model and reliability.
Gemini 2.5 Flash
Gemini 2.5 Pro
Outputs Comparison
Key Takeaways
Gemini 2.5 FlashGemini 2.5 ProDetailed Comparison
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