xAI
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
39.8
Quality Score
1249
Arena ELO
Undisclosed
Parameters
2M
Context
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Mar 2026
Released
Launches
2
Pricing
2
Benchmarks
3
General
6
Recent launch, pricing, benchmark, and API signals linked to this model or its provider.
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.
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.
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benchmarks. Because our models push the frontier of AI capabilities, we are committed to mitigating Our approach to safety evaluations focuses on measuring specific safety-relevant behaviors relevant to our current evaluation methodology, results, and mitigations for these various behaviors.
benchmarks. Because our models push the frontier of AI capabilities, we are committed to mitigating Our approach to safety evaluations focuses on measuring specific safety-relevant behaviors relevant to our current evaluation methodology, results, and mitigations for these various behaviors.