Model limit probe

xAI: Grok 4.20 Multi-Agent | concurrency limit

xAI: Grok 4.20 Multi-Agent concurrency limit decides whether a key can enter a production route. TestKey reads model ID x-ai/grok-4.20-multi-agent, provider xAI, catalog context, real-key headers, 429 errors, and region signals together.

Model

x-ai/grok-4.20-multi-agent

xAI: Grok 4.20 Multi-Agent

Provider

xAI

10 models in catalog

Limit dimension

concurrency limit

concurrency

Visible signal

real key probe required

Context window: 2,000,000

Limit matrix summary

Model

x-ai/grok-4.20-multi-agent

Limit dimension

concurrency

Visible signal

real key probe required

Read-only check. Detection data burns after 5 minutes.

Why this limit matters

xAI: Grok 4.20 Multi-Agent concurrency limit decides whether a key can enter a production route. TestKey reads model ID x-ai/grok-4.20-multi-agent, provider xAI, catalog context, real-key headers, 429 errors, and region signals together.

Model: x-ai/grok-4.20-multi-agent
Provider: xAI
Limit dimension: concurrency limit

How to prove it

Read-only check. Detection data burns after 5 minutes.

Start with the visible signal: real key probe required, then read headers and error bodies with read-only requests.
concurrency limit must bind model ID x-ai/grok-4.20-multi-agent; limits from another model at the same provider cannot be reused.
concurrency limit · real key probe required · 2,000,000

Operator action

xAI: Grok 4.20 Multi-Agent concurrency limit is not just a number. It should become route throttling, sale tags, headroom alerts, fallback model suggestions, and price protection.

Read-only check. Detection data burns after 5 minutes.
Visible signal: real key probe required
Context window: 2,000,000

Open key checker

Read-only check. Detection data burns after 5 minutes.

Open models

xAI: Grok 4.20 Multi-Agent

Open providers

xAI