Grok 4.5

xAI's strongest model (released July 8, 2026), pitched as 'Opus-class' and trained alongside Cursor for coding and agentic work. Scores 54 on the Artificial Analysis Intelligence Index (ranked #4 overall) and takes the top spot on agentic tool use; strong on Terminal-Bench (83.3%) and SWE-Bench Pro (64.7%).

Grok 4.5 strengths

• #1 on agentic tool use (Artificial Analysis)
• Strong coding and terminal/agent benchmarks
• 500K context window
• Competitive frontier pricing ($2/$6 per 1M)

Pricing & context

Cost guide: a typical call of about 10K input + 2K output tokens costs roughly $0.032 at list prices. Worth modelling against cheaper tiers before committing high-volume traffic.

When to choose Grok 4.5

Grok 4.5 is best for coding agents and long-running tool-use workflows that want a frontier model at mid-tier pricing. If your workload is more cost-sensitive, weigh it against gpt-oss-120b (≈$0.03 input /1M) first.

Grok 4.5 FAQ

How much does Grok 4.5 cost?

Grok 4.5 is priced at $2.00 per 1M input tokens and $6.00 per 1M output tokens (public API list price), with a 500K tokens context window. A typical call of about 10K input and 2K output tokens costs roughly $0.032.

What is Grok 4.5 best for?

Grok 4.5 by xAI is best for coding agents and long-running tool-use workflows that want a frontier model at mid-tier pricing.

How does Grok 4.5 pricing compare to Claude Opus 4.7?

Grok 4.5 input costs $2.00 per 1M tokens versus $5.00 for Claude Opus 4.7, roughly 2.5x less expensive on input. Output is $6.00 vs $25.00.

Is Grok 4.5 multimodal?

Grok 4.5 supports text, image.

Tools that use Grok 4.5