Grok 4.5 is so cheap compared to Fable 5 and GPT 5.5 that benchmark gaps may not matter much

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xAI releases Grok 4.5, trained on tens of thousands of Nvidia GB300 GPUs.

In coding benchmarks, the model trails Fable 5 and GPT-5.5 but needs 4.2 times fewer tokens than Opus 4.8.

At $2 per million input tokens, it costs a fraction of the competition.

EU availability is expected in mid-July.


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