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Developers can try Hydrogen through the Gemini API and AI Studio (@GoogleAIStudio). Google says that, at the default reasoning level, it scores ahead of Gemini 4 Argon on the Artificial Analysis Intelligence Index and completes tasks 2.5 times faster than Gemini 3.8 Flash (@GoogleAI). A personal account, @OfficialLoganK, says it is available across all tiers of AI Studio, the Gemini API, Gemini for business, the Gemini app and Google Search; Google AI Pro and Ultra subscribers can also use it in Antigravity. A Google AI Blog headline describes its arrival in Search as a major upgrade (Google Search gets a major upgrade with Gemini 4 Hydrogen).
Third-party figures come from separate tests. Cursor says Hydrogen is now in Cursor and reports 54.3% on CursorBench at the default effort setting, versus 39.6% for Gemini 3.8 Flash (@cursor_ai). Zapier reports 51.1% on AutomationBench, close to Argon's 51.3%, while estimating a task cost of about $0.82 versus Argon's $1.63 (@zapier).
01Sources
Evidence: 🗣 Statements by Google and third parties; not independently tested here.
- @GoogleAIStudio: Google AI Studio account on access through the API and AI Studio.
- @GoogleAI: Google's account on Hydrogen's role, speed and index comparison.
- @OfficialLoganK: Personal account, not an official account; lists availability and plans.
- @cursor_ai: Cursor's self-reported benchmark results.
- @zapier: Zapier's self-reported benchmark and per-task cost.
- Google Search gets a major upgrade with Gemini 4 Hydrogen: Google AI Blog headline on Hydrogen's arrival in Search.