grok-4.3 edges gpt-5.4 in a narrow, format-first fight

Grok 4.3 defeated GPT 5.4 by a score of 36.0 to 34.0 in a narrow contest focused on format compliance. GPT 5.4 outperformed on technical tasks like Python redact logs and IPv4 handling, but Grok 4.3 secured victory by making fewer mistakes on prompt-constrained tasks such as status update delay and meeting notes summary.

The scoreline says it all: grok 4.3 wins 36.0 to 34.0 , and this was not a blowout. It was a precision contest, and grok 4.3 simply made fewer avoidable mistakes where the prompt’s constraints mattered most. The split is clean. gpt 5.4 took python redact logs by being more robust on regex boundaries and invalid IPv4 handling — the better engineering answer, full stop. But grok 4.3 answered back on status update delay and meeting notes summary , and those wins were about compliance, not style ...