Grok 4.20 0309 (Reasoning)
xAIGrokProprietary
Description
Grok 4.20 Beta Reasoning is xAI's reasoning-optimized variant of the Grok 4.20 model family. Released as a beta on March 9, 2026, it uses thinking tokens for enhanced chain-of-thought reasoning, featuring a 2 million token context window for complex problem-solving tasks.
Release Date
2026-03-10
Parameters
—
Context Length
2.0M
Modalities
file, image, text
Capability Radar
45
general
43
coding
88
reasoning
61
scienceest.
0
agents
80
multimodal
Science uses a reasoning proxy when dedicated science benchmarks are unavailable.
Rankings
| Domain | #Rank | Score | Source |
|---|---|---|---|
| Code Ranking | 52 | 72.0 | AA |
| General Ranking | 12 | 89.0 | AA |
| Science | 32 | 78.0 | AA |
Benchmark Scores (LLM Stats)
No benchmark data available
AA Evaluation Indices
Intelligence Index48.5
Coding Index42.2
Tau21.0
Gpqa0.9
Ifbench0.8
Lcr0.6
Scicode0.4
Terminalbench Hard0.4
Hle0.3
LLM Stats Category Scores
Long Context60
Pricing
Input Price$2 / 1M tokens
Output Price$6 / 1M tokens
Blended Price (3:1)$3 / 1M tokens
Speed
Tokens/sec111.4 tokens/s
Time to First Token23.51s
Time to Answer23.51s
Available Providers
(LS internal units)| Provider | Input Price | Output Price |
|---|---|---|
| xAI | 2.0M | 6.0M |