Anthropic's Claude platform deployed new frontend strings referencing two new model IDs: '

EXHIBIT 1137 · FLASH

Sep 2, 2026 17:19 UTC web app https://platform.claude.com

Anthropic's Claude platform deployed new frontend strings referencing two new model IDs: 'claude-fable-5-1' and 'claude-mythos-5-1', alongside new feature flags and API endpoints related to compliance, workspaces, and feedback.

READY TO POST:

looks like anthropic might be cooking up new models. spotted 'claude-fable-5-1' and 'claude-mythos-5-1' in a recent console frontend deploy. early days but interesting!

new model ids 'claude-fable-5-1' and 'claude-mythos-5-1' surfaced in a claude platform frontend update. anthropic could be gearing up to release something new.

⚠️ FROM WEB-APP BUNDLE — may include vendored-dependency strings, verify before posting. Anthropic Console (https://platform.claude.com) deployed new frontend code [8e3ddd031bef86d9 -> a444dfa041d1dd7e]: +757 strings, -833 strings, 11 interesting [model_id] (2) + claude-fable-5-1 + claude-mythos-5-1 [feature_flag] (2) + -H "anthropic-beta: ${a.join(",")}" + /v1/organizations/compliance_settings?beta=true [endpoint] (8) + /v1/organizations/compliance_settings?beta=true + /api/organizations/:organizationUuid/console_feedback + /api/stripe/payment_update_redirect + /v1/organizations/workspaces/${(0,n.encodeApiPathSegment)(d)} + /v1/organizations/workspaces/${(0,n.encodeApiPathSegment)(e.id)} + /v1/organizations/workspaces/${(0,n.encodeApiPathSegment)(e.id)}/archive + https://claude.ai + https://privacy.anthropic.com/en/articles/9957937-how-does-anthropic-use-submitted-feedback