OpenGPTEvidence-based model decisionsModel families
Claude model family
The Claude family currently contains 6 provider-documented model IDs in the OpenGPT catalog. Each version keeps its own identity and lifecycle.
- Official model IDs
- 6
- Model providers
- Anthropic
- Mapped public signals
- 8
- Identity reviewed
Evidence scope
This page is an index of existing public evidence and provider-documented identities. Inclusion does not imply an OpenGPT endorsement or a universal rank. Anthropic · Claude.
How OpenGPT handles this evidence
Official identities come from provider documentation. Public ranking signals are attached only where the source label and exact catalog version have a reviewed mapping.
Comparison boundaries
- Models in one provider or family are not interchangeable; mode, version, lifecycle, tools, and service tier may change results.
- Absence from a public ranking means no comparable published signal was mapped, not a score of zero.
- Provider documentation establishes identity, not independent quality or suitability.
Official model IDs
The Claude family currently contains 6 provider-documented model IDs in the OpenGPT catalog. Each version keeps its own identity and lifecycle.
- Claude Fable 5claude-fable-5StableIdentity reviewed: 2026-07-24Mapped public signals: 3
- Claude Haiku 4.5claude-haiku-4-5-20251001StableIdentity reviewed: 2026-07-24Mapped public signals: 1
- Claude Opus 4.6claude-opus-4-6StableIdentity reviewed: 2026-07-24Mapped public signals: 1
- Claude Opus 4.7claude-opus-4-7StableIdentity reviewed: 2026-07-24Mapped public signals: 1
- Claude Opus 4.8claude-opus-4-8StableIdentity reviewed: 2026-07-24Mapped public signals: 1
- Claude Sonnet 5claude-sonnet-5StableIdentity reviewed: 2026-07-24Mapped public signals: 1