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Grok 4.5

Last verified: July 10, 2026

$2.00/1M input · $6.00/1M output · 500K context · xAI

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Alternatives to Grok 4.5

Cheaper Alternative
GPT-5.6 Luna
$1.00 in · $6.00 out · OpenAI
13% cheaper with same or larger context
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Mistral Medium 3.5
$1.50 in · $7.50 out · Mistral
Upgrade with 33K max output
Same Provider
Grok 4.20
$2.00 in · $6.00 out · xAI
Higher tier in xAI ecosystem

Pricing Details

xAIxAI's first model built specifically for coding and agent work, launched July 8, 2026 jointly with Cursor. Cached input $0.50 (75% off) per xAI docs. Context window 500K (down from Grok 4.3's 1M). Higher, unpublished input rate above 200K tokens (secondary trackers report ~2x, i.e. ~$4/$12, unconfirmed). Server-side tools: web/X search ~$5 per 1,000 calls. Artificial Analysis Intelligence Index 54 (#4). SWE-bench Pro 64.7, Terminal-Bench 2.1 83.3. ~4x more token-efficient than Opus 4.8 per AA. Trained on Cursor session data (Cursor disclosed accidental codebase-snapshot contamination). Estimated tokens (different tokenizer).
Input / 1M tokens
$2
Output / 1M tokens
$6
Context Window
500K
Max Output
16K
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Price History

Launched at current price on 2026-07-08. No price changes recorded.

Frequently Asked Questions

Common questions about Grok 4.5 pricing and usage

Read More About Grok 4.5

Grok 4.5 undercuts Opus 4.8 by two-thirds and burns fewer tokens getting there. The catches are a context window that shrank to 500K and a surcharge xAI won't put a number on.
July 10, 2026 · 8 min read
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