Grok 4.20
Grok 4.20 is a proprietary xAI language-model release. The publicly documented API release improves coding, knowledge work, instruction following, and hallucination behavior. Reasoning and non-reasoning endpoints are joined by a multi-agent serving option that runs parallel cooperative agents. The multi-agent orchestration is grouped as a variant rather than assigned a speculative new architecture. Earlier consumer beta reports do not establish a precise primary-source availability date. Weights are not publicly downloadable. Published agent and coding results depend on the evaluation harness, tool permissions, and inference settings, so no unsupported standalone benchmark score is assigned.
2026-03-10
Undisclosed
Proprietary
Specifications
- Architecture
- Undisclosed
- License
- Proprietary
- Context Window
- 2,000,000 tokens
- Type
- multimodal
- Modalities
- textimage
Benchmark Scores
Advanced Specifications
- Model Family
- Grok
- API Access
- Available
- Chat Interface
- Not Available
- Variants
- ReasoningNon-reasoningMulti-agent serving
Capabilities & Limitations
- Capabilities
- reasoningcodingtool usemulti-agent serving
- Known Limitations
- Closed weightsAvailability and aliases can changeOutputs may hallucinate
- Notable Use Cases
- developer assistantsagent workflowsgeneral assistance
- Tool Use Support
- Yes