Grok 4.20 Beta
GrokFlagship
Performance Tier
Flagship
Grok 4.20 Beta is a flagship model from Grok : the most capable in their lineup.
Best-in-class model from this provider. Highest performance across benchmarks, ideal for demanding tasks.
Capabilities
Context Length—
Max Output Tokens—
Benchmarks
General Intelligence
MMLU
Not reported
GPQA Diamond
88.5%
Mathematics
MATH-500
Not reported
Programming
HumanEval
Not reported
SWE-bench Verified
Not reported
Reasoning
IFEval
Not reported
Recommended Use Cases
CodingAnalysisResearchGeneral ChatCreative Writing
Strengths
- 4-agent internal architecture reduces hallucinations by 65% (from ~12% to ~4.2%)
- Industry-leading 2M token context window for massive document analysis
- Native multimodal understanding (text, image, video) with real-time X data access
- Top 5 on LMArena leaderboard — competitive with Claude Opus and GPT-5.4
Limitations
- Still in beta — performance and availability may change
- Premium pricing ($2.00/M input) compared to Grok 4 Fast variants
- Smaller third-party ecosystem than OpenAI/Anthropic
Resources
This model may use your data for training
