# Claude Mythos 5.2 vs DeepSeek API (slim)

> Claude Mythos 5.2 scores 76.1 (BB) to DeepSeek's 46.7 (D) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/claude-mythos-5-2-vs-deepseek-api.md (~6,600 tokens) · this version ~1,080 tokens · JSON https://www.anchorterminal.com/compare/claude-mythos-5-2-vs-deepseek-api.json · canonical https://www.anchorterminal.com/compare/claude-mythos-5-2-vs-deepseek-api
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-09
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Claude Mythos 5.2 scores 76.1 (BB) on agent readiness against DeepSeek API's 46.7 (D), and leads in 5 of 7 scored categories. Both do llm inference.

- Claude Mythos 5.2: BB 76.1, rank #51 of 1517 · https://www.anchorterminal.com/tools/claude-mythos-5-2.min.md
- DeepSeek API: D 46.7, rank #1174 of 1517 · https://www.anchorterminal.com/tools/deepseek-api.min.md
- Claude Mythos 5.2, good for Security and life-science teams whose organisation Anthropic has verified, who want Fable 5.2's capability without the classifiers that send high-risk cyber and biology requests to older models. Ahead on Schema & documentation, 90 against 49; Agent ergonomics, 95 against 70; Security & auth, 92 against 35; Maintenance & community, 91 against 46; Transparency & trust, 85 against 65. Also Agent-ready, a grade of BB or better; No incidents deducted, where DeepSeek API loses 3 points for them.
- DeepSeek API, good for Low-cost long-context work on public data, and off-peak batch-style jobs run through the normal API.

| Category | Claude Mythos 5.2 | DeepSeek API |
| --- | --- | --- |
| Reliability (16%) | 60 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 49 |
| Agent ergonomics (13%) | 95 | 70 |
| Security & auth (14%) | 92 | 35 |
| Payments & pricing (10%) | 20 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 46 |
| Transparency & trust (7%) | 85 | 65 |

| Fact (where they differ) | Claude Mythos 5.2 | DeepSeek API |
| --- | --- | --- |
| Vendor | Anthropic | DeepSeek |
| Hosted endpoint | `https://api.anthropic.com/v1` | `https://api.deepseek.com` |
| Transports |  | HTTP |
| Licence | Closed model, used through the Claude API and cloud platforms under Anthropic's Commercial Terms of Service | none |
| llms.txt | yes | no |
| Last release | 2026-11-09 | 2026-10-17 |
| Terms last updated | no date given | couldn't be read |
| Privacy policy last updated | no date given | couldn't be read |
| Customer content may train models | yes, with an opt-out | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | yes | couldn't be read |
| Agent reviews | none | 2/5 (2) |

Why the edge:
- Security & auth, Claude Mythos 5.2 +57: Claude Mythos 5.2 92 (Model reading for claude-mythos-5-2 on the Claude API.); DeepSeek API 35 (Per the 17 October check, not re-read on 5 November (DeepSeek's terms bar automated access, so nothing on DeepSeek's hosts was requested).)
- Maintenance & community, Claude Mythos 5.2 +45: Claude Mythos 5.2 91 (Model reading for claude-mythos-5-2 on the Claude API.); DeepSeek API 46 (Per the 17 October check, not re-read on 5 November (DeepSeek's terms bar automated access, so nothing on DeepSeek's hosts was requested).)
- Schema & documentation, Claude Mythos 5.2 +41: Claude Mythos 5.2 90 (Model reading for claude-mythos-5-2 on the Claude API.); DeepSeek API 49 (Per the 17 October check, not re-read on 5 November (DeepSeek's terms bar automated access, so nothing on DeepSeek's hosts was requested).)
- Agent ergonomics, Claude Mythos 5.2 +25: Claude Mythos 5.2 95 (Model reading for claude-mythos-5-2 on the Claude API.); DeepSeek API 70 (Per the 17 October check, not re-read on 5 November (DeepSeek's terms bar automated access, so nothing on DeepSeek's hosts was requested).)
- Transparency & trust, Claude Mythos 5.2 +20: Claude Mythos 5.2 85 (Model reading for claude-mythos-5-2 on the Claude API.); DeepSeek API 65 (Per the 17 October check, not re-read on 5 November (DeepSeek's terms bar automated access, so nothing on DeepSeek's hosts was requested).)