Gemini 3.5: frontier intelligence with action
DeepMind Blog · 2026-05-15
Google DeepMind launches Gemini 3.5 Flash, a frontier AI model optimized for agentic tasks and coding that outperforms Gemini 3.1 Pro on multiple benchmarks while running four times faster than competing frontier models, and simultaneously announces the Gemini Spark personal AI agent.
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Extraction
Topics: gemini-3.5large-language-modelsai-agentsgoogle-deepmindcoding-ai
Claims
- Gemini 3.5 Flash outperforms Gemini 3.1 Pro on coding and agentic benchmarks including Terminal-Bench 2.1 (76.2%), GDPval-AA (1656 Elo), and MCP Atlas (83.6%).
- Gemini 3.5 Flash outputs tokens four times faster than other frontier models while matching their intelligence quality.
- Gemini 3.5 Flash is now the default model powering the Gemini app and AI Mode in Google Search globally.
- A new 24/7 personal AI agent called Gemini Spark, powered by 3.5 Flash, is entering beta for Google AI Ultra subscribers in the US.
- Gemini 3.5 uses interpretability tools to examine the model's inner reasoning before generating responses, as part of strengthened cyber and CBRN safeguards.
Key quotes
Landing in the top-right quadrant of the Artificial Analysis index, 3.5 Flash delivers frontier-level intelligence at exceptional speed — proving you no longer have to trade quality for latency.
What used to take a developer days or an auditor weeks, 3.5 Flash can now help complete in a fraction of the time, often at less than half the cost of other frontier models.
We have strengthened our cyber and CBRN safeguards, which means it's less likely to generate harmful content, and to mistakenly refuse to answer safe queries.