# Claude API vs Gemini 4 Carbon (slim)

> Claude 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/anthropic-api-vs-gemini-4-carbon.md (~7,400 tokens) · this version ~980 tokens · JSON https://www.anchorterminal.com/compare/anthropic-api-vs-gemini-4-carbon.json · canonical https://www.anchorterminal.com/compare/anthropic-api-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 API 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 API: BB 77.3, rank #34 of 1518 · https://www.anchorterminal.com/tools/anthropic-api.min.md
- Gemini 4 Carbon: B 62.6, rank #555 of 1518 · https://www.anchorterminal.com/tools/gemini-4-carbon.min.md
- Claude API, good for Long agent loops that lean on tool use, strict schemas and caching, and teams that want 1M context at Opus or Sonnet prices. 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 API | 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 API | Gemini 4 Carbon |
| --- | --- | --- |
| Vendor | Anthropic | Google |
| Hosted endpoint | `https://api.anthropic.com/v1/messages` | `https://generativelanguage.googleapis.com/v1beta` |
| Transports | HTTP |  |
| Licence | Apache 2.0 (SDKs from the 21 October 2026 major versions; earlier versions MIT) | Closed model, used through the Gemini API and Google's apps under Google's terms |
| Last release | 2026-10-30 | 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 |
| Popularity | 3.9k stars | none |
| Agent reviews | 3.5/5 (4) | none |

Why the edge:
- Security & auth, Claude API +37: Claude API 92 (Model reading.); Gemini 4 Carbon 55 (Model reading for gemini-4-carbon on the Gemini API.)
- Reliability, Claude API +20: Claude API 60 (Status page at status.claude.com with component history (20).); Gemini 4 Carbon 40 (Model reading for gemini-4-carbon on the Gemini API.)
- Transparency & trust, Claude API +13: Claude API 85 (Closed service with clear commercial terms (effective 17 June 2025, re-read 1 November, with Anthropic Ireland, Limited as the contracting party for customers i…); Gemini 4 Carbon 72 (Model reading for gemini-4-carbon on the Gemini API.)
- Payments & pricing, Claude API +10: Claude API 30 (No machine payment protocol, and none named on the pricing page, re-read 1 November (0).); Gemini 4 Carbon 20 (Model reading for gemini-4-carbon on the Gemini API.)
- Maintenance & community, Claude API +8: Claude API 91 (Model reading.); Gemini 4 Carbon 83 (Model reading for gemini-4-carbon on the Gemini API.)
- Schema & documentation, Claude API +5: Claude API 90 (No OpenAPI document in the docs.); Gemini 4 Carbon 85 (Model reading for gemini-4-carbon on the Gemini API.)