AI Launch Profile
Gemini 4 Hydrogen
Google announced Gemini 4 Hydrogen on November 12, 2026. It is available through free and paid Gemini API and AI Studio tiers, with paid Google AI Pro and Ultra access in Antigravity. Google says free Gemini app access uses automatic model selection when appropriate; account rollout may vary. It is a hosted release; downloadable weights were not announced.
Original Kingy-made conceptual illustration of Hydrogen’s shared input, thinking and output context; not a measured capacity diagram or product output.
At a glance
Launch Snapshot
- Company
- Launch date
- November 12, 2026
- Launch type
- Model Release
- Category
- AI Models
- Audience
- Developers
- Pricing
- Standard paid Gemini API rates are US$1.50 per million input tokens and US$7.50 per million output tokens, including thinking. Implicit cached input is US$0.075 per million. Free access is rate limited; grounding and other tools can add charges. Review Google’s data-use terms before submitting sensitive code: unpaid-service prompts and responses may be used to improve Google products, with regional and account exceptions.
- Free plan
- Yes
- API
- Yes
- Open weights/source
- No
Launch Context
Use these links to move from this record into the broader Launch Intelligence database.
Verification & Sources
- Evidence state
- Source-verified
- Source links
- 5
- Freshness
- Checked November 13, 2026
- Last verified
- November 13, 2026
- Last updated
- November 13, 2026
What this evidence state means
- Definition
- The stated claim was checked against a named primary or authoritative source. This does not mean Kingy tested the product.
- Required provenance
- At least one public, named primary or authoritative source that directly supports the claim.
- Owner
- Kingy editorial reviewer
- Freshness rule
- Recheck within 30 days and after a material product, price, access, or source change.
- Disputes and corrections
- Use “Suggest a correction” on the record. Kingy editorial reviews the cited evidence, records material corrections, and changes or removes the state when it is not supported.
Key source checks
Suggest a correction
Kingy AI Take
Gemini 4 Hydrogen provides a source-documented hosted option for developers evaluating frequent coding and agent tasks. Measure it on your workload and include thinking and tool charges in the cost comparison.
Who it is for
Developers
What feels promising
Developers can choose a Gemini 4 model intended for frequent execution tasks, with hosted free-tier access for evaluation. Input, thinking and output share a 1,048,576-token context window, with 65,536-token synchronous output. Higher thinking can use more tokens. Google reports possible hallucinations and timeouts; Kingy has not measured reliability.
What feels unproven
Input, thinking and output share one 1,048,576-token window. Synchronous output is limited to 65,536 tokens per hop; longer output needs background execution or continuation. Google discloses hallucinations, possible slowness/timeouts and higher token use at higher thinking settings. Free Gemini app access uses automatic selection. Kingy has not tested model quality, latency or reliability.
Source-backed record
Evidence sources
Related Kingy Links
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