# Claude Fable 5.2 vs Gemini 4 Carbon (slim)

> Claude Fable 5.2 scores 77.3 (BB) to Gemini 4 Carbon's 62.6 (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-carbon.md (~6,700 tokens) · this version ~980 tokens · JSON https://www.anchorterminal.com/compare/claude-fable-5-2-vs-gemini-4-carbon.json · canonical https://www.anchorterminal.com/compare/claude-fable-5-2-vs-gemini-4-carbon
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-10
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Claude Fable 5.2 scores 77.3 (BB) on agent readiness against Gemini 4 Carbon's 62.6 (B), and leads in every scored category. Both do llm inference.

- Claude Fable 5.2: BB 77.3, rank #35 of 1518 · https://www.anchorterminal.com/tools/claude-fable-5-2.min.md
- Gemini 4 Carbon: B 62.6, rank #555 of 1518 · https://www.anchorterminal.com/tools/gemini-4-carbon.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 40; Schema & documentation, 90 against 85; Security & auth, 92 against 55; Payments & pricing, 30 against 20; Maintenance & community, 91 against 83; Transparency & trust, 85 against 72. Also Agent-ready, a grade of BB or better.
- 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.

| Category | Claude Fable 5.2 | Gemini 4 Carbon |
| --- | --- | --- |
| Reliability (16%) | 60 | 40 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 85 |
| Agent ergonomics (13%) | 95 | 93 |
| Security & auth (14%) | 92 | 55 |
| Payments & pricing (10%) | 30 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 83 |
| Transparency & trust (7%) | 85 | 72 |

| Fact (where they differ) | Claude Fable 5.2 | Gemini 4 Carbon |
| --- | --- | --- |
| 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 | 2026-11-10 |
| 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 +37: Claude Fable 5.2 92 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Carbon 55 (Model reading for gemini-4-carbon on the Gemini API.)
- Reliability, Claude Fable 5.2 +20: Claude Fable 5.2 60 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Carbon 40 (Model reading for gemini-4-carbon 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 Carbon 72 (Model reading for gemini-4-carbon on the Gemini API.)
- Payments & pricing, Claude Fable 5.2 +10: Claude Fable 5.2 30 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Carbon 20 (Model reading for gemini-4-carbon on the Gemini API.)
- Maintenance & community, Claude Fable 5.2 +8: Claude Fable 5.2 91 (Model reading for claude-fable-5-2 on the Claude API.); Gemini 4 Carbon 83 (Model reading for gemini-4-carbon 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 Carbon 85 (Model reading for gemini-4-carbon on the Gemini API.)