GPT-5.5 uses significantly fewer tokens for the same Codex tasks. In general, you should expect better capability with fewer tokens vs GPT-5.4, not an increase!
GPT-5.5 Improves Codex Efficiency With Fewer Tokens
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GPT-5.5 uses significantly fewer tokens for the same Codex tasks. In general, you should expect better capability with fewer tokens vs GPT-5.4, not an increase!