Grok 4.20 Multi-Agent
Grok 4.20 Multi-Agent is worth evaluating for rag, agents, and long context when its provider route and context window match the workload.
Use it for
- Teams evaluating rag, agents, and long context
- Workloads that can use a 2m context window
- Buyers comparing 3 tracked provider routes
Do not use it for
- Workloads where another current model has stronger sourced task evidence
- Family
- Grok 4
- Released
- 2026-03-10
- Context
- 2m
- Knowledge cutoff
- 2024-11
- Specialization
- agentic
- Openness
- Proprietary
- License
- ProprietaryCommercial use with conditions
Cheapest of 3 routes · Vercel AI Gateway · cache read $0.200
About
Grok 4.20 Multi-Agent is the extended-context xAI API variant launched around March 10, 2026 as grok-4.20-multi-agent-0309. Its reasoning.effort parameter controls how many collaborating agents are used, and the variant carries a 2M token context window.
Grok 4.20 Multi-Agent is a proprietary model in the Grok 4 family. The structured metadata tracks a 2m-token context window, multimodal input, reasoning, function calling, tool use, and structured outputs. This page tracks provider routes through OpenRouter, xAI Console, and Vercel AI Gateway, with the cheapest tracked route listed at $1.25 input and $2.5 output per 1M tokens. No headline benchmark score is tracked for Grok 4.20 Multi-Agent yet.
Top use-case fit: coding, agents, and build tasks
RAG
Included by capability and metadata signals in the decision map.
Agents
Included by capability and metadata signals in the decision map.
Long context
Included by capability and metadata signals in the decision map.
Provider price ladder
Compare all 3Compare API pricing across 3 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Cache | Route |
|---|---|---|---|---|
| Vercel AI Gateway | $1.25 | $2.50 | read $0.200 | Serverless |
| xAI Console | $1.25 | $2.50 | - | Serverless |
| OpenRouter | $2.00 | $6.00 | - | Serverless |
Capabilities
Benchmark peer barsfor RAG
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
Rankings & picks(10)
Cheapest of 3 routes · Vercel AI Gateway · cache read $0.200