Today's price · per 1M tokens
Input
$2.00
per 1M tokens
Output
$6.00
per 1M tokens
Blended
$3.00
blended $/1M — 3:1 weighted input:output
Price receipt
We read xAI's own pricing page on and found grok-4.5 listed with a price on the same row — that read is where the number above comes from. We keep the page text we read; its content hash is 427827311d.
Overview
An Opus-class frontier model from xAI built for coding, agentic tasks, and knowledge work, trained on the 1.5T V9 foundation with Cursor data. ~2x token efficiency vs comparable leaders, 500K context, configurable reasoning effort. $2/$6 per 1M tokens.
Capabilities
struck through = not supportedBenchmark performance
accuracy % · higher is betterEvery per-benchmark score we hold for this model is reported by its own vendor, so none is counted toward an accuracy average or any ranking. The percentile above is its standing across the independent composites below.
- AA Intelligence Index: 39.1 (Artificial Analysis composite across reasoning, knowledge and coding evals)
- AA-Omniscience Index: 25.3 (−100–100)
- GDPval-AA v2: 1526.4 ELO (Real-world work tasks, human baseline = 1000)
- LMSYS Chatbot Arena: 1468.1 ELO (Human preference)
- Ranks #29 of 181 comparably-measured models by percentile score, across 4 independent measurements
- Ranks #118 of 181 comparably-tested models by normalized performance per dollar
88.2 tokens/sec output
Source: Artificial Analysis, LMSYS Chatbot Arena (UC Berkeley), xAI Grok 4.5 launch post · updated · See full rankings →
Specifications
- Provider
- xAI
- Context window
- 500K tokens
- Modality
- text, image
- Parameters
- Proprietary
- Open source
- No — proprietary
- Released
- Status
- Current
- Last updated
- Tags
Availability verified: — listed on xAI's own page