Instead of hardcoding SPEND_PER_REQUEST (which broke when the model
changed from gpt-3.5-turbo-0301 to gpt-3.5-turbo), make a single
calibration request first, poll for its spend, and use that as the
per-request cost. Fails fast with pytest.fail() after 5 retries if
calibration cannot determine the cost.
Also fixes a bug in test_basic_spend_accuracy where the user spend
assertion error message referenced user_info['info'] instead of
user_info['user_info'].
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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