OpenAI AI Updates: September 19, 2026

1. Codex CLI 0.155.0 Added Voice Conversations and Touch ID Approval for MCP

OpenAI shipped Codex CLI 0.155.0 with an experimental /voice mode that runs a spoken conversation with live transcripts and microphone controls on supported builds. The same release added Touch ID verification for MCP requests in local TUI sessions on supported Macs, which puts a hardware gate on tool calls rather than a keystroke. Live reasoning summaries now render in the TUI status row with completion timestamps, and the agents overview gained hide, archive, and delete for tasks. Source

2. The Same Release Fixed Bedrock Credentials and WSL Sandbox Escapes

OpenAI added credential retrieval from a configured command for Amazon Bedrock, with caching and expiration-based refresh, so Codex can pick up rotating AWS credentials without a manual step. Daemon update schedules are now configurable through codex app-server daemon update, and sessions recover across daemon restarts. On the security side, the release hardened the WSL sandbox against Windows process escapes and made MCP servers report expired OAuth credentials with reconnect guidance instead of failing opaquely. Follow-up release 0.155.1 landed the next day to stop new local TUI sessions defaulting reasoning summaries on, which was getting requests rejected by providers that do not support them. Source