Twitter/X

@godofprompt (published 2026-05-10) says the old Gemini Interactions API behaved…

2026-05-10 · 12:15 UTC ·@godofprompt ·1 min read

Brief

Author @godofprompt reports that Google’s Gemini Interactions API moved from an opaque prompt→response model to a structured timeline that labels each step (thinking, searching, tool calls, final output). Google posted the change via Google AI Studio and says the schema enables mid‑flight steering and async tool calls; existing integrations must be updated before June 6.

Why it matters

@godofprompt (published 2026-05-10) says the old Gemini Interactions API behaved like a vending machine—prompt in, answer out—with no visibility into intermediate model steps.

Key details

  • The update exposes a structured, labeled timeline of each model step (thinking, searching, tool calls, final output), letting automations react to individual steps instead of parsing a single blob.
  • Google is preparing for mid‑flight steering and async tool calls; the schema changed to support that and the old Gemini Interactions API format will break on June 6 — check your integrations.
Source evidence

The old Gemini API worked like a vending machine. Prompt in, answer out, no visibility into what happened between.

This update gives you a structured timeline of every step the model took: thinking, searching, tool calls, final output. Each one labeled and separated. You can now build automations that react to individual steps instead of parsing a blob.

The real reason for the change: Google is preparing the API for mid-flight steering (redirecting the model while it's working) and async tool calls (the model keeps processing while waiting on external data). Both are coming. The schema had to change first.

If you built anything on the Gemini Interactions API, the old format breaks June 6. Check your integrations.

Google AI Studio (@GoogleAIStudio)

we’re evolving the gemini interactions api to support rich, multi-step agentic workflows

instead of strict "user" and "model" roles, every action (from thinking to tool calls) is now represented as its own step

— https://nitter.net/GoogleAIStudio/status/2052487438967140700#m