# Claude Fable 5.2 vs SWE-2 Flash (slim)

> Claude Fable 5.2 scores 77.3 (BB) to SWE-2 Flash's 36.4 (F) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

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- 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
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Claude Fable 5.2 scores 77.3 (BB) on agent readiness against SWE-2 Flash's 36.4 (F), and leads in every scored category. Both do llm inference.

- Claude Fable 5.2: BB 77.3, rank #35 of 1517 · https://www.anchorterminal.com/tools/claude-fable-5-2.min.md
- SWE-2 Flash: F 36.4, rank #1395 of 1517 · https://www.anchorterminal.com/tools/swe-2-flash.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 50; Schema & documentation, 90 against 29; Agent ergonomics, 95 against 10; Security & auth, 92 against 53; Payments & pricing, 30 against 20; Maintenance & community, 91 against 53; Transparency & trust, 85 against 64. Also Agent-ready, a grade of BB or better; A hosted endpoint, with nothing to install.
- SWE-2 Flash, good for People already using Devin Desktop or Devin CLI who want a cheaper, faster model for routine coding work such as automations, reviews and small changes, while it is free in November 2026.

| Category | Claude Fable 5.2 | SWE-2 Flash |
| --- | --- | --- |
| Reliability (16%) | 60 | 50 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 29 |
| Agent ergonomics (13%) | 95 | 10 |
| Security & auth (14%) | 92 | 53 |
| Payments & pricing (10%) | 30 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 53 |
| Transparency & trust (7%) | 85 | 64 |

| Fact (where they differ) | Claude Fable 5.2 | SWE-2 Flash |
| --- | --- | --- |
| Vendor | Anthropic | Cognition AI, Inc. |
| Hosted endpoint | `https://api.anthropic.com/v1` | no (local only) |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Freemium |
| Licence | Closed model, used through the Claude API and cloud platforms under Anthropic's Commercial Terms of Service | Proprietary model, used through Devin Desktop and Devin CLI under Cognition's Platform Terms of Service. The weights are not public; Cognition says it is building a programme to share them with industry partners and researchers |
| Last release | 2026-11-09 | 2026-11-04 |
| Terms last updated | no date given | 2026-06-30 |
| Privacy policy last updated | no date given | 2026-03-09 |

Why the edge:
- Agent ergonomics, Claude Fable 5.2 +85: Claude Fable 5.2 95 (Model reading for claude-fable-5-2 on the Claude API.); SWE-2 Flash 10 (Model reading (tool use, structured output, caching, context, batch, SDKs).)
- Schema & documentation, Claude Fable 5.2 +61: Claude Fable 5.2 90 (Model reading for claude-fable-5-2 on the Claude API.); SWE-2 Flash 29 (Model reading.)
- Security & auth, Claude Fable 5.2 +39: Claude Fable 5.2 92 (Model reading for claude-fable-5-2 on the Claude API.); SWE-2 Flash 53 (Read as a hosted model reached through Devin's local clients.)
- Maintenance & community, Claude Fable 5.2 +38: Claude Fable 5.2 91 (Model reading for claude-fable-5-2 on the Claude API.); SWE-2 Flash 53 (Model reading.)
- Transparency & trust, Claude Fable 5.2 +21: Claude Fable 5.2 85 (Model reading for claude-fable-5-2 on the Claude API.); SWE-2 Flash 64 (Editorial half.)
- Reliability, Claude Fable 5.2 +10: Claude Fable 5.2 60 (Model reading for claude-fable-5-2 on the Claude API.); SWE-2 Flash 50 (Model reading, for the surface it runs on, Devin Desktop and Devin CLI.)