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Gemini 3.5 Flash Added to AI Gateway

·2026.05.19 09:00

Key point

Gemini 3.5 Flash has been added to Vercel AI Gateway, with medium thinking set as the default.

Details

Gemini 3.5 Flash has been added to Vercel AI Gateway. It offers improved coding performance and a parallel agentic execution loop compared to the previous Flash version, along with strengthened core reasoning, instruction following, and multi-turn coherence.

The default thinking level is set to medium. This balances response quality, speed, and cost, and provides higher-quality reasoning traces in thinking mode.

In the AI SDK, you can specify the model as google/gemini-3.5-flash.

  • Unsupported options: temperature, topP, topK, thinking_budget
  • AI Gateway: A unified API that consolidates model calls, tracks usage and cost, and provides retry, failover, performance optimizations, custom reporting, observability, Bring Your Own Key, and intelligent provider routing to aim for higher uptime than individual providers
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