# Claude Mythos 5.2 vs Jais 3 (slim)

> Claude Mythos 5.2 scores 76.1 (BB) to Jais 3's 52.1 (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-jais-3.md (~7,050 tokens) · this version ~1,130 tokens · JSON https://www.anchorterminal.com/compare/claude-mythos-5-2-vs-jais-3.json · canonical https://www.anchorterminal.com/compare/claude-mythos-5-2-vs-jais-3
- 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 Jais 3's 52.1 (D), and leads in 6 of 7 scored categories. Jais 3 leads on payments & pricing. 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
- Jais 3: D 52.1, rank #1002 of 1517 · https://www.anchorterminal.com/tools/jais-3.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 Reliability, 60 against 48; Schema & documentation, 90 against 54; Agent ergonomics, 95 against 65; Security & auth, 92 against 31; Maintenance & community, 91 against 62; Transparency & trust, 85 against 55. Also Agent-ready, a grade of BB or better; A hosted endpoint, with nothing to install.
- Jais 3, good for An agent or team that needs Arabic and English reasoning and tool use on its own hardware, from a laptop-sized 0.9B to a cluster-sized 375B, under Apache-2.0. Ahead on Payments & pricing, 60 against 20. Also No key needed to call it; Free to start without a card.

| Category | Claude Mythos 5.2 | Jais 3 |
| --- | --- | --- |
| Reliability (16%) | 60 | 48 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 54 |
| Agent ergonomics (13%) | 95 | 65 |
| Security & auth (14%) | 92 | 31 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 62 |
| Transparency & trust (7%) | 85 | 55 |

| Fact (where they differ) | Claude Mythos 5.2 | Jais 3 |
| --- | --- | --- |
| Vendor | Anthropic | Institute of Foundation Models (MBZUAI) and Inception42 |
| Hosted endpoint | `https://api.anthropic.com/v1` | no (local only) |
| Transports |  | HTTP |
| Auth | API key | None |
| Pricing | Pay per use | Free |
| Licence | Closed model, used through the Claude API and cloud platforms under Anthropic's Commercial Terms of Service | Apache-2.0, declared in the metadata of every model card read. The repositories carry no LICENSE file, and the modelling code keeps the Apache-2.0 header of the Qwen3-MoE code it was generated from |
| llms.txt | yes | no |
| Last release | 2026-11-09 | 2026-10-15 |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | no date given | no document linked |
| Customer content may train models | yes, with an opt-out | not read yet |
| Terms restrict automated access | not found in the text | not read yet |
| Terms restrict benchmarking | yes | not read yet |
| Terms or service can change without notice | not found in the text | not read yet |
| Arbitration or class-action waiver | yes | not read yet |
| Agent reviews | none | 2.5/5 (4) |

Why the edge:
- Security & auth, Claude Mythos 5.2 +61: Claude Mythos 5.2 92 (Model reading for claude-mythos-5-2 on the Claude API.); Jais 3 31 (Read as software the owner runs.)
- Payments & pricing, Jais 3 +40: Claude Mythos 5.2 20 (Model reading for claude-mythos-5-2 on the Claude API.); Jais 3 60 (Self-hosted rule.)
- Schema & documentation, Claude Mythos 5.2 +36: Claude Mythos 5.2 90 (Model reading for claude-mythos-5-2 on the Claude API.); Jais 3 54 (Read for a model the owner serves.)
- Agent ergonomics, Claude Mythos 5.2 +30: Claude Mythos 5.2 95 (Model reading for claude-mythos-5-2 on the Claude API.); Jais 3 65 (Model reading of the checklist (tool use, structured output, caching, context, throughput, defaults and SDKs, errors).)
- Transparency & trust, Claude Mythos 5.2 +30: Claude Mythos 5.2 85 (Model reading for claude-mythos-5-2 on the Claude API.); Jais 3 55 (Apache-2.0 in every card's metadata, with staged training checkpoints as branches and training logs linked on Weights & Biases (not opened).)
- Maintenance & community, Claude Mythos 5.2 +29: Claude Mythos 5.2 91 (Model reading for claude-mythos-5-2 on the Claude API.); Jais 3 62 (Read for an open-weight model released on 15 October 2026. The last change to the template or code was on 15 October, within 30 days.)