Gemini 2.5 Flash (developers.googleblog.com)

Article summary

Google has released an early version of Gemini 2.5 Flash, a hybrid reasoning model that allows developers to control the thinking process and set a thinking budget. This model delivers a major upgrade in reasoning capabilities while prioritizing speed and cost. Gemini 2.5 Flash is available in preview via the Gemini API in Google AI Studio and Vertex AI. The model is trained to know how long to think for a given prompt and automatically decides how much to think based on the perceived task complexity.

Main themes

• Gemini 2.5 Flash
• Hybrid Reasoning Model
• Thinking Budget
• AI Pricing
• Model Comparison
• Gemini API

What commenters say

• The price increase of Gemini 2.5 Flash is reasonable compared to other models of similar quality.
• The pricing of Gemini 2.5 Flash seems to be guided by the Pareto Frontier curve rather than underlying costs.
• The model's ability to turn thinking on or off and set a thinking budget is a useful feature for developers.
• Some users find the rate limits on the preview models to be a significant limitation.
• Gemini 2.5 Flash may not be the best option for consumers due to limited brand recognition and earlier models having more refusals.
• The model's performance and cost-effectiveness make it a good choice for certain use cases, such as OCR tasks.
• The error rate of Gemini 2.5 Flash may be too high for some tasks, making it unsuitable for certain applications.
• The comparison of Gemini 2.5 Flash to other models, such as ChatGPT and Claude, is complex and depends on specific use cases and requirements.