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CostPerPrompt

Grok 4.5 API Pricing

xAI · context window 500K · prices updated 2026-08-02

Input per 1M tokens
$2.00
Output per 1M tokens
$6.00
Cached input per 1M
$0.3
85% cheaper than fresh input

What real workloads cost on Grok 4.5

Workload Per request Per month
1K short requests/day (500 in / 150 out) $0.0019 $57.00
Support chatbot, 500 convs/day (~5K in / 1.4K out per conv) $0.0184 $276
Document pipeline, 10K docs/day (3K in / 500 out) $0.009 $2700

Model your exact traffic in the API cost calculator — it preloads Grok 4.5 with caching and batch options.

Cheaper alternatives

Claude Haiku 4.5 Anthropic $1.00 in · $5.00 out GPT-5.4 Mini OpenAI $0.75 in · $4.50 out Qwen3.7 Max Alibaba (Qwen) $1.48 in · $4.42 out

More xAI models

Grok 4.3 Grok 4.20 Multi-Agent Grok 4.20 Grok Build 0.1

Frequently asked questions

› How much does the Grok 4.5 API cost?

Grok 4.5 costs $2.00 per million input tokens and $6.00 per million output tokens, with cached input at $0.3 per million (85% cheaper). In practice, a typical short request (500 tokens in, 150 out) costs about $0.0019.

› What does 1,000 requests per day cost on Grok 4.5?

At 500 input + 150 output tokens per request, 1,000 requests/day costs about $57.00 per month. Heavier workloads scale linearly — use our API cost calculator to model your exact traffic.

› How can I reduce Grok 4.5 costs?

Three levers, in order of impact: (1) route routine requests to a cheaper tier and keep Grok 4.5 for hard cases; (2) enable prompt caching — cached input is 85% cheaper, which typically halves chatbot bills; (3) use the batch API for non-urgent jobs at a ~50% discount.

› Is Grok 4.5 worth the price?

It depends on task difficulty. Flagship models earn their premium on complex reasoning, coding, and high-stakes output; mini/flash tiers handle classification, extraction and routine chat at 10–30× lower cost. Benchmark a sample of your real workload on both before committing.