# Gemini 3.5 Flash on AI Gateway

> Source: <https://vercel.com/changelog/gemini-3-5-flash-on-ai-gateway>
> Published: 2026-05-19 07:00:00+00:00

Gemini 3.5 Flash is now available on [Vercel AI Gateway](https://vercel.com/ai-gateway).

This model has improved coding proficiency and parallel agentic execution loops versus previous Flash versions. It also brings improvements to core reasoning, instruction following, and multi-turn coherence, with stronger performance on complex tasks and higher-quality reasoning traces in thinking mode.

3.5 Flash defaults to the `medium`

thinking level, balancing response quality with faster, more cost-efficient generation.

To use Gemini 3.5 Flash, set model to `google/gemini-3.5-flash`

in the [AI SDK](https://ai-sdk.dev/).

Note that `temperature`

, `topP`

, `topK`

, and `thinking_budget`

are not supported by this model.

AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in [custom reporting](https://vercel.com/docs/ai-gateway/capabilities/custom-reporting), [observability](https://vercel.com/docs/observability/ai-sdk-observability), [Bring Your Own Key](https://vercel.com/docs/ai-gateway#bring-your-own-key) support, and intelligent provider routing with automatic retries.

Learn more about [AI Gateway](https://vercel.com/docs/ai-gateway), view the [AI Gateway model leaderboard](https://vercel.com/ai-gateway/leaderboards) or try it in our [model playground](https://vercel.com/ai-gateway/models/gemini-3.5-flash).