# Gemini 4 Carbon vs Gemini 4 Hydrogen (slim)

> Gemini 4 Hydrogen scores 64.9 (B) to Gemini 4 Carbon's 63.9 (B) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/gemini-4-carbon-vs-gemini-4-hydrogen.md (~5,800 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/gemini-4-carbon-vs-gemini-4-hydrogen.json · canonical https://www.anchorterminal.com/compare/gemini-4-carbon-vs-gemini-4-hydrogen
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-13
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Gemini 4 Hydrogen scores 64.9 (B) on agent readiness against Gemini 4 Carbon's 63.9 (B), and leads in 3 of 7 scored categories. Gemini 4 Carbon leads on security & auth. Both do llm inference.

- Gemini 4 Carbon: B 63.9, rank #599 of 1524 · https://www.anchorterminal.com/tools/gemini-4-carbon.min.md
- Gemini 4 Hydrogen: B 64.9, rank #546 of 1524 · https://www.anchorterminal.com/tools/gemini-4-hydrogen.min.md
- Gemini 4 Carbon, good for Agents on the hardest long tasks (multi-step debugging, large codebases, open-ended research, security work) that can pay frontier prices and already use the Gemini API. Ahead on Security & auth, 55 against 50.
- Gemini 4 Hydrogen, good for Agents doing everyday coding, tool calls and document work at volume on the Gemini API, including ones that need to start on a free key, or as the executor beside Carbon or Argon. Ahead on Reliability, 45 against 40; Payments & pricing, 40 against 30.

| Category | Gemini 4 Carbon | Gemini 4 Hydrogen |
| --- | --- | --- |
| Reliability (16%) | 40 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 85 | 85 |
| Agent ergonomics (13%) | 93 | 90 |
| Security & auth (14%) | 55 | 50 |
| Payments & pricing (10%) | 30 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 85 |
| Transparency & trust (7%) | 72 | 72 |

| Fact (where they differ) | Gemini 4 Carbon | Gemini 4 Hydrogen |
| --- | --- | --- |
| Last release | 2026-11-10 | 2026-11-12 |

Why the edge:
- Payments & pricing, Gemini 4 Hydrogen +10: Gemini 4 Carbon 30 (Model reading for gemini-4-carbon on the Gemini API.); Gemini 4 Hydrogen 40 (Model reading for gemini-4-hydrogen on the Gemini API.)
- Reliability, Gemini 4 Hydrogen +5: Gemini 4 Carbon 40 (Model reading for gemini-4-carbon on the Gemini API.); Gemini 4 Hydrogen 45 (Model reading for gemini-4-hydrogen on the Gemini API.)
- Security & auth, Gemini 4 Carbon +5: Gemini 4 Carbon 55 (Model reading for gemini-4-carbon on the Gemini API.); Gemini 4 Hydrogen 50 (Model reading for gemini-4-hydrogen on the Gemini API.)