Gemini 4 Carbon vs Gemini 4 Hydrogen
API pricing, context, and independently measured performance, side by side. Gemini 4 Hydrogen starts 25% cheaper on input than Gemini 4 Carbon at list prices.
Gemini 4 Carbon
Google · released Nov 10, 2026
Best input$2.00 / MTok
Best output$10.00 / MTok
Context1.05M
Providers7
Fastest measured18.7s° TTFT · 91 tok/s
VisionToolsReasoningStructured outputPrompt caching
Gemini 4 Hydrogen
Google · released Nov 12, 2026
Best input$1.50 / MTok
Best output$7.50 / MTok
Context1.05M
Providers7
Fastest measured—
VisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Gemini 4 Carbon |  Google | $2.00 | $10.00 | 18.7s° | 91° tok/s | — |
| Gemini 4 Carbon |  Google AI Studio | $2.00 | $10.00 | — | — | — |
| Gemini 4 Hydrogen | Google | $1.50 | $7.50 | — | — | — |
| Gemini 4 Hydrogen | Google AI Studio | $1.50 | $7.50 | — | — | — |
TTFT/TPS: ModelIndex-measured medians (P50, trailing 21d) · chat10k profile (~10K in / 200 out) · ° = measured via OpenRouter routing (adds a hop) · SMOKE: of 5 programmatic capability probes passed · methodology v1.1 — full details on each model page