xAI
Grok 4.20 workflow variant designed for coordinated multi-agent orchestration and complex tool use.
OpenRouter
Price record: 2026-10-03. Source: openrouter.
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33.1
Quality Score
1250
Arena ELO
Undisclosed
Parameters
256K
Context
This measures the amount of verifiable public evidence we have, not how capable the model is. A missing field means it has not been verified yet, not that its value is zero.
15 of 22 public signals
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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Mar 2026
Released
3/5 signals
4/4 signals
5/5 signals
1/4 signals
2/4 signals
Gaps we are still tracking
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
Models and Pricing | xAI Docs
Modes Agent, TTS & STT Realtime $3.00 / hour TTS $4.20 / 1M characters Read docs Try in playground Imagine API Turn ideas into reality with our image and video generation models. Use case Model Chat Grok 4.20 Coding Grok 4.20 Images Grok Imagine API Videos Grok Imagine API Voice Grok Voice API Chat API We strongly recommend all API callers use grok-4.20. Since the agent autonomously decides how many tools to call, costs scale with query complexity.
View source1250
ELO Score
1244 - 1256
95% Confidence
+/-6 points
24.6K
Battles
Oct 3, 2026
Last Updated