Alpha· Major · Confirmed

Audio input reaches the Responses API

Codex adds audio-bearing input protocol support and forwards audio while keeping history model-compatible.

  • Feature
  • API
  • Agents
  • CLI

Audio becomes a first-class input shape across protocol and forwarding layers. History inclusion remains guarded by the selected model's declared input modalities.

Alpha release context: 1 official tag was published that UTC day (rust-v0.145.0-alpha.24). The full comparison contains 20 commits and 209 changed files.

Evidence

User-input protocols gain audio variants.Why it matters: App clients can represent audio input through defined protocol types instead of an out-of-band convention.

Direct evidence · Confirmed

Supporting sources

Conflicting sources

No conflicting sources recorded.

Audio inputs are forwarded to the Responses API.Why it matters: Audio-bearing turns can reach model inference through the normal response path when the model supports them.

Direct evidence · Confirmed

Supporting sources

Conflicting sources

No conflicting sources recorded.

Availability

Availability note: these sources establish repository and CLI release activity. They do not, by themselves, prove that the same changes were live in Codex Desktop.

Availability by surface

SurfaceStatusClaim-level evidence
CLIPrerelease · Documented · General
  • claim-2026-07-18-audio-input-protocol: Prerelease · Documented · General · version 0.145.0-alpha.24 · source-release-2026-07-18
  • claim-2026-07-18-forward-audio: Prerelease · Documented · General · version 0.145.0-alpha.24 · source-release-2026-07-18
  • claim-2026-07-18-visualization-links: Prerelease · Documented · General · version 0.145.0-alpha.24 · source-release-2026-07-18
DesktopUnknown · Unknown · Unknown
IDEUnknownNo central-claim assertion recorded.
CloudUnknownNo central-claim assertion recorded.
MobileUnknownNo central-claim assertion recorded.