Author's Description
Gemini 2.5 Flash is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with greater accuracy and nuanced context handling. Additionally, Gemini 2.5 Flash is configurable through the "max tokens for reasoning" parameter, as described in the documentation (https://openrouter.ai/docs/use-cases/reasoning-tokens#max-tokens-for-reasoning).
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
Google's Gemini 2.5 Flash demonstrates competitive response times, performing among the faster models with a 52nd percentile speed ranking. Its pricing is moderate, positioned at the 30th percentile, offering a balanced cost-efficiency. A standout feature is its exceptional reliability, achieving a perfect 100th percentile, indicating virtually no technical failures and consistent response delivery. The model excels in several key areas. It achieved perfect accuracy in both Ethics and General Knowledge benchmarks, notably being the most accurate model at its price point and speed for these categories. Its Reasoning capabilities are also highly impressive, with 99.0% accuracy, placing it in the 97th percentile. Instruction Following is another strong suit, with 75.0% accuracy, ranking in the 91st percentile. Email Classification also shows strong performance at 99.0% accuracy. While its Coding performance is solid at 83.0% accuracy, it represents a relative area for potential improvement compared to its near-perfect scores in other domains. Overall, Gemini 2.5 Flash is a robust workhorse model, particularly strong in reasoning, knowledge, and ethical considerations, making it highly suitable for complex analytical and content generation tasks.
Model Pricing
Current Pricing
Feature | Price (per 1M tokens) |
---|---|
Prompt | $0.3 |
Completion | $2.5 |
Input Cache Read | $0.075 |
Input Cache Write | $0.383 |
Price History
Available Endpoints
Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
---|---|---|---|---|
Google
|
Google | google/gemini-2.5-flash | 1M | $0.3 / 1M tokens | $2.5 / 1M tokens |
Google AI Studio
|
Google AI Studio | google/gemini-2.5-flash | 1M | $0.3 / 1M tokens | $2.5 / 1M tokens |
Google
|
Google | google/gemini-2.5-flash | 1M | $0.3 / 1M tokens | $2.5 / 1M tokens |
Benchmark Results
Benchmark | Category | Reasoning | Free | Executions | Accuracy | Cost | Duration |
---|
Other Models by google
|
Released | Params | Context |
|
Speed | Ability | Cost |
---|---|---|---|---|---|---|---|
Google: Gemini 2.5 Flash Lite | Jul 22, 2025 | — | 1M |
Audio input
File input
Text input
Image input
Text output
|
★★★★★ | ★★★ | $$$ |
Google: Gemini 2.5 Flash Lite Preview 06-17 | Jun 17, 2025 | — | 1M |
Audio input
File input
Text input
Image input
Text output
|
★★★★ | ★★★ | $$$ |
Google: Gemini 2.5 Pro | Jun 17, 2025 | — | 1M |
Audio input
File input
Text input
Image input
Text output
|
★ | ★★★★★ | $$$$$ |
Google: Gemini 2.5 Pro Preview 06-05 | Jun 05, 2025 | — | 1M |
Audio input
File input
Text input
Image input
Text output
|
★ | ★★★★★ | $$$$$ |
Google: Gemma 1 2B Unavailable | May 28, 2025 | 2B | 8K |
Text input
Text output
|
— | — | $$ |
Google: Gemma 3n 4B | May 20, 2025 | 4B | 32K |
Text input
Text output
|
★★★ | ★★★ | $ |
Google: Gemini 2.5 Flash Preview 05-20 Unavailable | May 20, 2025 | — | 1M |
File input
Text input
Image input
Text output
|
★★★★ | ★★★★★ | $$$ |
Google: Gemini 2.5 Pro Preview 05-06 | May 06, 2025 | — | 1M |
Audio input
File input
Text input
Image input
Text output
|
★ | ★★★★★ | $$$$$ |
Google: Gemini 2.5 Flash Preview 04-17 Unavailable | Apr 17, 2025 | — | 1M |
File input
Text input
Image input
Text output
|
★★★★ | ★★★★★ | $$$ |
Google: Gemini 2.5 Pro Experimental | Mar 25, 2025 | — | 1M |
File input
Text input
Image input
Text output
|
— | — | $ |
Google: Gemma 3 4B | Mar 13, 2025 | 4B | 131K |
Text input
Image input
Text output
|
★★★ | ★★ | $ |
Google: Gemma 3 12B | Mar 13, 2025 | 12B | 131K |
Text input
Image input
Text output
|
★★ | ★★ | $$ |
Google: Gemma 3 27B | Mar 11, 2025 | 27B | 131K |
Text input
Image input
Text output
|
★★ | ★★★ | $$ |
Google: Gemini 2.0 Flash Lite | Feb 25, 2025 | — | 1M |
Audio input
File input
Text input
Image input
Text output
|
★★★★★ | ★★ | $$ |
Google: Gemini 2.0 Flash | Feb 05, 2025 | — | 1M |
Audio input
File input
Text input
Image input
Text output
|
★★★★★ | ★★★ | $$ |
Google: Gemini 1.5 Flash 8B | Oct 02, 2024 | ~500B | 1M |
Text input
Image input
Text output
|
★★★★★ | ★★ | $$ |
Google: Gemma 2 27B | Jul 12, 2024 | 27B | 8K |
Text input
Text output
|
★★★★★ | ★★ | $$$$ |
Google: Gemma 2 9B | Jun 27, 2024 | 9B | 8K |
Text input
Text output
|
★★★★★ | ★ | $$ |
Google: Gemini 1.5 Flash | May 13, 2024 | ~500B | 1M |
Text input
Image input
Text output
|
★★★★★ | ★★★ | $$ |
Google: Gemini 1.5 Pro | Apr 08, 2024 | ~1T | 2M |
Text input
Image input
Text output
|
★★★ | ★★★ | $$$$ |