OpenGPTEvidence-based model decisionsModel families
Grok model family
The Grok family currently contains 5 provider-documented model IDs in the OpenGPT catalog. Each version keeps its own identity and lifecycle.
- Official model IDs
- 5
- Model providers
- xAI
- Mapped public signals
- 6
- 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. xAI · Grok.
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 Grok family currently contains 5 provider-documented model IDs in the OpenGPT catalog. Each version keeps its own identity and lifecycle.
- Grok 4.20 · non-reasoning snapshotgrok-4.20-0309-non-reasoningStableIdentity reviewed: 2026-07-24Mapped public signals: 0
- Grok 4.20 · reasoning snapshotgrok-4.20-0309-reasoningStableIdentity reviewed: 2026-07-24Mapped public signals: 1
- Grok 4.3grok-4.3StableIdentity reviewed: 2026-07-24Mapped public signals: 2
- Grok 4.5grok-4.5StableIdentity reviewed: 2026-07-24Mapped public signals: 2
- Grok Build 0.1grok-build-0.1PreviewIdentity reviewed: 2026-07-24Mapped public signals: 1