Gemini 2.5: Updates to our family of thinking models

Right now we’re excited to share updates throughout the board to our Gemini 2.5 mannequin household:

Gemini 2.5 Professional is usually accessible and secure (no modifications from the 06-05 preview)Gemini 2.5 Flash is usually accessible and secure (no modifications from the 05-20 preview, see pricing updates under)Gemini 2.5 Flash-Lite is now accessible in preview

Gemini 2.5 fashions are pondering fashions, able to reasoning by way of their ideas earlier than responding, leading to enhanced efficiency and improved accuracy. Every mannequin has management over the pondering funds, giving builders the power to decide on when and the way a lot the mannequin “thinks” earlier than producing a response.

Introducing Gemini 2.5 Flash-Lite

Right now, we’re introducing 2.5 Flash-Lite in preview with the bottom latency and price within the 2.5 mannequin household. It’s designed as an economical improve from our earlier 1.5 and a couple of.0 Flash fashions. It additionally gives higher efficiency throughout most evals, and decrease time to first token whereas additionally attaining greater tokens per second decode. This mannequin is nice for prime throughput duties like classification or summarization at scale.

Gemini 2.5 Flash-Lite is a reasoning mannequin, which permits for dynamic management of the pondering funds with an API parameter. As a result of Flash-Lite is optimized for price and velocity, “pondering” is off by default, not like our different fashions. 2.5 Flash-Lite additionally helps all of our native instruments like Grounding with Google Search, Code Execution, and URL Context along with operate calling.

Updates to Gemini 2.5 Flash and pricing

During the last 12 months, our analysis groups have continued to push the pareto frontier with our Flash mannequin sequence. When 2.5 Flash was initially introduced, we had not but finalized the capabilities for two.5 Flash-Lite. We additionally launched with a “pondering” and “non-thinking value”, which led to developer confusion.

With the secure model of Gemini 2.5 Flash rolling out (which is identical 05-20 mannequin preview we made accessible at Google I/O), and the unbelievable efficiency of two.5 Flash, we’re updating the pricing for two.5 Flash:

$0.30 / 1M enter tokens (*up from $0.15 enter)$2.50 / 1M output tokens (*down from $3.50 output)We eliminated the pondering vs. non-thinking value differenceWe stored a single value tier no matter enter token dimension

Whereas we try to take care of constant pricing between preview and secure releases to attenuate disruption, it is a particular adjustment reflecting Flash’s distinctive worth, nonetheless providing the perfect cost-per-intelligence accessible.

And with Gemini 2.5 Flash-Lite, we now have a good decrease price choice (with or with out pondering) for price and latency delicate use circumstances that require much less mannequin intelligence.

If you’re utilizing the Gemini 2.5 Flash Preview 04-17 , the present preview pricing will stay in impact till its deliberate deprecation on July 15, 2025, at which level that mannequin endpoint might be turned off. You’ll be able to transition to the widely accessible mannequin “gemini-2.5-flash”, or swap to 2.5 Flash-Lite Preview as a decrease price choice.

Continued development of Gemini 2.5 Professional

The expansion and demand for Gemini 2.5 Professional continues to be the steepest of any of our fashions we’ve got ever seen. To permit extra clients to construct on this mannequin in manufacturing, we’re making the 06-05 model of the mannequin secure, with the identical pareto frontier value level as earlier than.

We anticipate that circumstances the place you want the best intelligence and most capabilities are the place you will notice Professional shine, like coding and agentic duties. Gemini 2.5 Professional is on the coronary heart of lots of the most liked developer instruments.

If you’re utilizing 2.5 Professional Preview 05-06, the mannequin will stay accessible till June 19, 2025 after which might be turned off. If you’re utilizing 2.5 Professional Preview 06-05, you may merely replace your mannequin string to “gemini-2.5-pro”.

We are able to’t wait to see much more domains profit from the intelligence of two.5 Professional and stay up for sharing extra about scaling past Professional within the close to future.