Rank, 14 days: 67 on the Codex sheet
3 people reported

All time, since Nov 10, including 1 thumbs-up on GitHub.

400 with zstd request compression

“{"detail":"Bad Request"}”

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I hit this bug: rapsheet.dev/sheets/codex/issues/27502/file
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HTTP 400 Bad Request on highly compressible requests with zstd compression. Responses requests to chatgpt.com/backend-api/codex/responses return a 24-byte {"detail":"Bad Request"} when request compression is enabled and bodies contain image inputs; uncompressed succeeds.

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Where
Responses HTTP requests
Error text
{"detail":"Bad Request"}
Versions
0.166.0-alpha.6 to 0.167.0
Platforms
Linux, Windows
How bad
Breaks a normal workflow.

Not quite your bug?

  1. Old images resent each request13 people

Original reports2, newest first

  1. zstd request compression: backend returns 400 {"detail":"Bad Request"} when the body compresses more than ~110×On GitHub#61489
  2. HTTP 400 for repeated image inputs with zstd request compression; same inputs succeed uncompressed (Windows)On GitHub#60594

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