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xAIReleased 2026-07-08

Grok 4.5

Grok 4.5 is xAI's flagship released July 8, 2026. 1.5T parameters, 500K context. $2/$6 per 1M tokens. Musk calls it 'Opus-class'. Terminal Bench 2.1 at 83.3%. Trained with Cursor. Cache hit: $0.50/1M.

Context
500K tokens
Input
$2/1M
Output
$6/1M
Modalities
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Best For

Coding tasksX/Twitter integrationCheap with cache

Strengths

  • Strong at coding (Terminal Bench 2.1: 83.3%)
  • Cache hit pricing: $0.50/1M (very cheap)
  • X/Twitter integration unique
  • Trained with Cursor, integrated with Cursor plans
  • 80 tokens/second inference speed

Weaknesses

  • Brand association concerns (Musk/X)
  • EU launch delayed to mid-July
  • Less ecosystem than OpenAI
  • 500K context (smaller than competitors' 1M)

Related Alternatives

Claude Opus 4.8

Better quality, similar price

GPT-5.6

Larger ecosystem, more mature

Frequently Asked Questions

How much does Grok 4.5 cost?

Grok 4.5 costs $2 per 1M input tokens and $6 per 1M output tokens. Cache hit pricing is $0.50 per 1M input tokens, making repeated context extremely cheap.

Is Grok 4.5 good for coding?

Yes, it's one of the best. Terminal Bench 2.1 score of 83.3% puts it near Opus 4.8's level. It's integrated with Cursor across all paid plans. SWE Bench Pro at 64.7% — competitive with the best.

See Grok 4.5's full record in our database

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