Gemini 3.5 Flash on AI Gateway
Quick Answer
Gemini 3.5 Flash is now available on Vercel AI Gateway, featuring enhanced coding proficiency, improved reasoning, and multi-turn coherence.
Quick Take
Gemini 3.5 Flash is now available on Vercel AI Gateway, featuring enhanced coding proficiency, improved reasoning, and multi-turn coherence. This model defaults to medium thinking level for efficient generation and is optimized for complex tasks, with no support for temperature or topK parameters.
Key Points
- Gemini 3.5 Flash offers improved parallel execution and reasoning capabilities.
- The model defaults to medium thinking level for faster, cost-efficient responses.
- AI Gateway provides unified API for model calls and performance optimizations.
- Built-in features include custom reporting and intelligent provider routing.
- Temperature, topP, topK, and thinking_budget are unsupported in this model.
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Gemini 3.5 Flash is now available on Vercel 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.
import { streamText } from 'ai';
const result = streamText({
model: 'google/gemini-3.5-flash',
prompt: 'Refactor this service to run API calls in parallel.',
providerOptions: {
google: { // use vertex or google
thinkingConfig: {
thinkingLevel: 'high',
includeThoughts: true,
},
},
});
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, observability, Bring Your Own Key support, and intelligent provider routing with automatic retries.
Learn more about AI Gateway, view the AI Gateway model leaderboard or try it in our model playground.
— Originally published at vercel.com
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