Fast Grok model for responsive chat, reasoning, and tool-assisted work
Specification
xai listing
Context
131K
Max output
131K
Released
2025-04-11
Knowledge cutoff
2024-06
Retires
2026-02-28
Open weights
no
Input
text
Output
text
Price
US dollars per million tokens · xai list price
Input
$1.25
Output
$2.50
Cache read
$0.20
Long-context price tiers
the rate above each context threshold
| Above | Price | $/M |
|---|---|---|
| 200K | Cache read | $0.40 |
| 200K | Input | $2.50 |
| 200K | Output | $5.00 |
Quality
5 benchmarks · 1 source
Composite
63rd
percentile of 334 scored models
Rank
124 / 334
±0.06 sd
Evidence
5 × 1
one source, or fewer than 3 benchmarks
Effort range
—
one configuration only
reasoning79th1/4 bench
math59th4/7 bench
Every score
one row per source and configuration — nothing averaged away
| Benchmark | Score | Configuration | Source | Run |
|---|---|---|---|---|
| MATH level 5 | 89.5 ±0.8 | default · 2 runs | Epoch AI | 2025-04-10 |
| OTIS Mock AIME 2024-2025 | 70.0 ±7.3 | default · 2 runs | Epoch AI | 2025-04-10 |
| GPQA diamond | 75.4 ±2.8 | default · 2 runs | Epoch AI | 2025-05-26 |
| FrontierMath-Tier-4-2025-07-01 | 0.0 ±0.0 | default | Epoch AI | 2025-07-01 |
| FrontierMath-v1 | 2.2 ±0.0 | default · 4 runs | Epoch AI | 2025-04-10 |
The leading figure for a benchmark is the median across its configurations, so one heroic high-effort run cannot set the number.
Available from 6 hosts
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