Grok 4
Specifications
- Context window
- 256,000 tokens
- Modality
- text
- License
- proprietary
- Family
- Grok
- Release date
- 2025-07-09
Links
Provider status
Timeline
Released
Initial public availability.
Pricing changes, lineage updates, and new benchmark results appear here as they happen. See the releases feed for the latest vendor activity.
API pricing
| Tier | Input / 1M tokens | Output / 1M tokens | Cache read | As of |
|---|---|---|---|---|
| standard | $3.00 | $15.00 | — | 2025-07-09 · source ↗ |
Looking for consumer subscriptions? See xAI's plans →
Benchmarks
Model Index →| Benchmark | Score | Setting | Measured | Source |
|---|---|---|---|---|
| MMLU-Pro general knowledge | 82.8% | 5-shot CoT | 2025-07-09 | source ↗ |
| GPQA Diamond reasoning | 87.5% | 0-shot CoT | 2025-07-09 | source ↗ |
| Aider Polyglot coding | 72.5% | edit + test | 2025-07-15 | source ↗ |
| AIME 2025 math | 86.1% | CoT | 2025-07-09 | source ↗ |
| LiveCodeBench coding | 65.3% | pass@1, post-cutoff | 2025-07-15 | source ↗ |
Want to see how Grok 4 ranks across these? Open the Model Index leaderboard →
Infrastructure context
All intelligence →Compute, silicon, and capex events that shape Grok 4's economics.
- Compute clusterdirect
xAI Colossus 2: targeting 1M GPUs across Memphis + new Mississippi site
Colossus 2 — xAI's expansion target — aims for 550k Blackwell-class GPUs (GB200/GB300) in 2026, scaling toward 1M total accelerators by year-end. A second 2GW campus in DeSoto County, MS, is under construction to host the bulk of the buildout. Power deals announced with the Tennessee Valley Authority and Mississippi Power.
Accelerators: 1M · GB200/GB300Power: 2 GWLocation: Memphis, TN + DeSoto County, MS - Compute clusterdirect
xAI Colossus: 200k H100 GPUs in 122 days at the Memphis ex-Electrolux site
xAI brought up its first Memphis training cluster, "Colossus", in 122 days — a build cadence unprecedented in the industry. The initial buildout was 100k H100s; xAI doubled it to 200k by early 2025 by adding H200s. Power was bridged with on-site mobile gas turbines while Tennessee Valley Authority capacity caught up. Colossus trained Grok 3 and is currently training Grok 4 successors.
Accelerators: 200k · H100/H200Power: 150 MWLocation: Memphis, TN
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