Source record

Published by Amp News (ampcode.com) (T1 source). The original is at https://ampcode.com/news/gpt-5.4.

Pipeline notes

The summary and note below are generated by the signal pipeline — they are Beyond Desk’s reading, not quotations from the source.

Amp now runs GPT-5.4 to power its deep mode in the CLI and editor extension. The team tuned the model to reduce verbosity, matching GPT-5.3-Codex behavior, and runs it at deep^3 reasoning. Instructions for enabling deep mode via the command palette and switching reasoning depth with Opt-D are provided.

Firsthand note from the Amp team on tuning a frontier model for autonomous agent work, with concrete keybindings and reasoning-depth settings for users to replicate.

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