Lovable: Gemini 3.5 Flash Now Available for AI Features

Gemini 3.5 Flash: Google's Fastest Frontier Model Arrives in Lovable Apps

On May 21, 2026, Lovable added Gemini 3.5 Flash to its built-in AI connector, making Google's newest frontier model available for use within apps built on the platform — just 48 hours after Google announced the model at Google I/O 2026 on May 19.

About Gemini 3.5 Flash

Gemini 3.5 Flash is Google's strongest model yet for coding and autonomous agentic tasks, released as part of a broader AI product refresh at Google I/O 2026. Its defining characteristics:

Speed: Gemini 3.5 Flash runs 4 times faster than other frontier models measured by output tokens per second, making it particularly well-suited for real-time and agentic use cases where latency matters.

Coding performance: The model scores 76.2% on Terminal-Bench 2.1, the benchmark most widely used to evaluate coding-capable models — surpassing Gemini 3.1 Pro (70.3%) and establishing a new standard for fast, capable coding models in the frontier category.

Agentic benchmarks: Gemini 3.5 Flash scores 1,656 Elo on GDPval-AA (a real-world agentic evaluation) and 83.6% on MCP Atlas. It outperforms GPT-5.5 on MMMU-Pro (83.6% vs. 81.2%), though GPT-5.5 retains a lead on ARC-AGI-2 (84.6% vs. 72.1%).

Context window: 1,048,576 input tokens with up to 65,536 output tokens, supporting large codebases, extensive documentation, and complex multi-step agent chains without hitting limits.

Cost: Less than half the cost of comparable frontier models — a significant factor for Lovable app builders whose AI features are billed per usage and passed through to end users.

Multimodal inputs: Accepts text, image, audio, and video inputs, enabling richer AI-powered app experiences across diverse content types.

How It Works in Lovable

The model is accessible via Lovable's built-in AI connector using the model identifier google/gemini-3.5-flash. Builders who enable AI features in their apps can target Gemini 3.5 Flash for use cases including:

• Coding assistants that help end users write or debug code within the app
• Reasoning pipelines requiring fast, structured analysis of complex inputs
• Agentic workflows where the model needs to autonomously complete multi-step tasks

The model's combination of speed and cost efficiency makes it an attractive default for apps where responsiveness matters and per-call costs are visible to the builder.

Timing and Context: Google I/O and Lovable's Google Relationship

Lovable's rapid integration follows a well-established pattern. The platform has consistently shipped model upgrades within 24-72 hours of major releases — a cadence observed with Opus 4.6, Opus 4.7, GPT-5.5, and now Gemini 3.5 Flash.

Notably, Lovable is featured in Google's Agent Gallery — a curated showcase of AI-powered applications highlighted at Google Cloud Next 2026 in April. This ongoing relationship between the two companies likely facilitated the rapid adoption, positioning Lovable apps among the first non-Google production environments where Gemini 3.5 Flash is deployable.