# Claude Fable 5.2 vs Gemini 4 Hydrogen (slim)

> Claude Fable 5.2 scores 79.2 (A) to Gemini 4 Hydrogen's 64.9 (B) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/claude-fable-5-2-vs-gemini-4-hydrogen.md (~7,200 tokens) · this version ~980 tokens · JSON https://www.anchorterminal.com/compare/claude-fable-5-2-vs-gemini-4-hydrogen.json · canonical https://www.anchorterminal.com/compare/claude-fable-5-2-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)

Claude Fable 5.2 scores 79.2 (A) on agent readiness against Gemini 4 Hydrogen's 64.9 (B), and leads in every scored category. Both do llm inference.

- Claude Fable 5.2: A 79.2, rank #38 of 1524 · https://www.anchorterminal.com/tools/claude-fable-5-2.min.md
- Gemini 4 Hydrogen: B 64.9, rank #546 of 1524 · https://www.anchorterminal.com/tools/gemini-4-hydrogen.min.md
- Claude Fable 5.2, good for Agents doing long, hard work (large coding changes, multi-step research, computer use) that can pay frontier prices, accept 30-day retention and don't need to force a tool call. Ahead on Reliability, 60 against 45; Schema & documentation, 90 against 85; Agent ergonomics, 95 against 90; Security & auth, 92 against 50; Payments & pricing, 45 against 40; Maintenance & community, 91 against 85; Transparency & trust, 85 against 72. Also Agent-ready, a grade of BB or better.
- 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.

| Category | Claude Fable 5.2 | Gemini 4 Hydrogen |
| --- | --- | --- |
| Reliability (16%) | 60 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 85 |
| Agent ergonomics (13%) | 95 | 90 |
| Security & auth (14%) | 92 | 50 |
| Payments & pricing (10%) | 45 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 85 |
| Transparency & trust (7%) | 85 | 72 |

| Fact (where they differ) | Claude Fable 5.2 | Gemini 4 Hydrogen |
| --- | --- | --- |
| Vendor | Anthropic | Google |
| Hosted endpoint | `https://api.anthropic.com/v1` | `https://generativelanguage.googleapis.com/v1beta` |
| Licence | Closed model, used through the Claude API and cloud platforms under Anthropic's Commercial Terms of Service | Closed model, used through the Gemini API and Google's apps under Google's terms |
| Last release | 2026-11-09 | 2026-11-12 |
| Terms last updated | no date given | 2026-04-28 |
| Privacy policy last updated | no date given | 2026-10-01 |
| Customer content may train models | yes, with an opt-out | yes |
| Terms restrict automated access | not found in the text | yes |
| Arbitration or class-action waiver | yes | not found in the text |

Why the edge:
- Security & auth, Claude Fable 5.2 +42: Claude Fable 5.2 92 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Hydrogen 50 (Model reading for gemini-4-hydrogen on the Gemini API.)
- Reliability, Claude Fable 5.2 +15: Claude Fable 5.2 60 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Hydrogen 45 (Model reading for gemini-4-hydrogen on the Gemini API.)
- Transparency & trust, Claude Fable 5.2 +13: Claude Fable 5.2 85 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Hydrogen 72 (Model reading for gemini-4-hydrogen on the Gemini API.)
- Maintenance & community, Claude Fable 5.2 +6: Claude Fable 5.2 91 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Hydrogen 85 (Model reading for gemini-4-hydrogen on the Gemini API.)
- Schema & documentation, Claude Fable 5.2 +5: Claude Fable 5.2 90 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Hydrogen 85 (Model reading for gemini-4-hydrogen on the Gemini API.)
- Agent ergonomics, Claude Fable 5.2 +5: Claude Fable 5.2 95 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Hydrogen 90 (Model reading for gemini-4-hydrogen on the Gemini API.)