fix: add explicit pricing for Opus 4.8 (claude-opus-4-8)#134
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Opus 4.8 had no explicit entry in either pricing table; cost only resolved via the generic 'opus' substring fallback to 4.7's rate. Add claude-opus-4-8 (same rates as 4.7: $5/$25 in/out, $0.50 cache read, $6.25 cache write) to cli.py PRICING, dashboard.py PRICING, and the README cost table, and point the opus fallback at the latest model. Adds a regression guard test. Closes phuryn#133.
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Jun 15, 2026
The live CLI + dashboard pricing tables already carry claude-fable-5, claude-mythos-5, and (via #134) claude-opus-4-8, but the README cost table listed none of them and still said "as of April 2026". Add the three rows, list fable/mythos in the "included models" note, and align the date with the dashboard footnote (May 2026). Record both this and #134 under v1.2.6. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
Adds an explicit pricing entry for Opus 4.8 (
claude-opus-4-8), which was missing from both pricing tables. Closes #133.Before this change, cost for
claude-opus-4-8was only computed via the genericopussubstring fallback, which returned the 4.7 rate. The numbers happened to be correct (4.8 has the same API pricing as 4.7), but:opuscatch-all fallback pointed at a previous model.Changes
cli.py— addclaude-opus-4-8toPRICING; point theopusfallback atclaude-opus-4-8dashboard.py— addclaude-opus-4-8to the JSPRICING; point theopusfallback atclaude-opus-4-8README.md— add theclaude-opus-4-8row to the cost tabletests/test_cli.py— addclaude-opus-4-8to the known-models list + a regression guard (test_opus_4_8_has_explicit_entry)Rates match Opus 4.7 (verified against claude.com/pricing#api):
$5input,$25output,$0.50cache read,$6.25cache write per MTok.Testing
python3 -m unittest discover -s tests— all green (incl. the new guard and the existing cli↔dashboard pricing-parity tests).