ShroominicandClaude Opus 4.8 e972b62758 fix(payment): refund truly-empty responses with a non-zero USD cost ...

When an upstream reports a non-zero USD cost but the response carries no
tokens at all (input, output, cache-read and cache-creation all zero), the
USD path billed the full USD-derived amount for an empty response. Return an
all-zero cost (full refund) for that case only.

The gate is tightened relative to the superseded PR #489: a cache-read- or
cache-creation-only turn legitimately reports zero prompt/completion tokens
with a real cost and must still be billed, so the refund only fires when every
token bucket is zero.

Adds unit tests covering both the refund and the still-billed cache-only path.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-20 13:10:24 +08:00

..

integration

resolve review comments

2026-06-12 20:20:38 +02:00

unit

fix(payment): refund truly-empty responses with a non-zero USD cost

2026-06-20 13:10:24 +08:00

run_integration.py

dump wip stash

2025-08-06 20:31:55 -03:00