# USD per million tokens. Source: Anthropic pricing.
# Governed by specs/CostAccounting.md §9 — a stale sheet invalidates new
# M-D2-CST `better` verdicts. Staleness is enforced by `make cost-test`,
# not by this comment.
#
# Dated rates are DATA, not comments. A promotional rate written as a
# comment is invisible to the collector that reads this file: the sonnet
# intro price sat in a `#` remark and was silently ignored, costing $0.17
# on a $93.32 pass and heading for a sign flip on 2026-08-31.

recorded = 2026-07-31
max_age_days = 90

[claude-fable-5]
input = 10.00
output = 50.00

[claude-opus-5]
input = 5.00
output = 25.00

[claude-sonnet-5]
input = 3.00
output = 15.00
# Promotional rate in force through `until` (inclusive); the collector
# applies it to any response whose timestamp falls on or before that date.
promo_input = 2.00
promo_output = 10.00
promo_until = 2026-08-31

[claude-haiku-4-5]
input = 1.00
output = 5.00

[cache]                 # multipliers on the input price
read = 0.1
write_5m = 1.25
write_1h = 2.0