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fix(cost): resolve snapshot-suffixed model IDs to base pricing before conservative estimate

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OpenRouter sometimes returns a dated snapshot ID as the response model
(request deepseek/deepseek-v4-flash -> response model
deepseek/deepseek-v4-flash-20260423). The pricing chain missed the
registry on those IDs and booked the conservative $10/$30 per-M
estimate: today's prod single-pass run logged $0.582 against a true
flash-tier cost of roughly 1-2 cents. Inflated actuals eat the
Cost_Governor per-run ceiling (default $0.50; today's run would have
halted) and the monthly $5 budget gate (~9 days to self-block).

Fix at the single pricing seam (OpenRouter_Pricing::estimate_cost):
on a lookup miss, strip a trailing 8-digit 20-prefixed -YYYYMMDD
snapshot suffix and retry the hardcoded table + cached models list
once with the base ID. The conservative fallback is unchanged when
the base ID is also unknown. Governor reserve/settle and
generation-log booking all price through this seam, so every path
survives snapshot IDs.

Tests: snapshot ID resolves to the base price when only the base ID
is registered; an unknown ID without a suffix still gets the
conservative estimate; a non-date trailing digit run (foo-202612345)
is never stripped.

Agent-Session: pipeline-v2-phase1-pricing-fix-20260611
This commit is contained in:
peptiderepo
2026-06-11 05:31:57 +00:00
parent 1062af2815
commit e6e3f85542
3 changed files with 171 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

93
includes/providers/class-open-router-pricing.php
View File

@@ -132,7 +132,9 @@ class PRAutoBlogger_OpenRouter_Pricing {
/**
* Estimate the cost of an API call in USD.
*
* Uses hardcoded pricing first, falls back to cached model data.
* Uses hardcoded pricing first, falls back to cached model data. IDs
* carrying a date-snapshot suffix that miss both sources are retried
* once as their base ID (see resolve_pricing()).
*
* @param string $model Model identifier.
* @param int $prompt_tokens Input tokens.
@@ -146,18 +148,7 @@ class PRAutoBlogger_OpenRouter_Pricing {
return 0.0;
}
$pricing = self::MODEL_PRICING[ $model ] ?? null;
// Fall back to cached model list pricing.
if ( null === $pricing ) {
$models = $this->get_available_models();
foreach ( $models as $m ) {
if ( $m['id'] === $model && isset( $m['pricing'] ) ) {
$pricing = $m['pricing'];
break;
}
}
}
$pricing = $this->resolve_pricing( $model );
if ( null === $pricing ) {
// Unknown model — use a conservative estimate.
@@ -172,6 +163,82 @@ class PRAutoBlogger_OpenRouter_Pricing {
+ ( $completion_tokens * $pricing['completion'] / 1000000 );
}
/**
* Resolve pricing for a model ID, normalizing dated snapshot IDs.
*
* Tries the exact ID first. On a miss, strips a trailing date-snapshot
* suffix and retries once with the base ID: OpenRouter responses can
* name a dated snapshot of the requested model (e.g. request
* 'deepseek/deepseek-v4-flash', response model
* 'deepseek/deepseek-v4-flash-20260423') while pricing sources only
* list the base ID. Every cost path (governor reserve/settle and
* generation-log booking) prices through this seam, so all of them
* survive snapshot IDs instead of booking the conservative estimate.
*
* Side effects: may fetch the models list over HTTP on cache miss
* (via get_available_models()).
*
* @param string $model Model ID as requested, or as returned by the API.
*
* @return array{prompt: float, completion: float}|null Per-million USD pricing, or null when unknown.
*/
private function resolve_pricing( string $model ): ?array {
$pricing = $this->lookup_pricing( $model );
if ( null !== $pricing ) {
return $pricing;
}
$base = $this->strip_snapshot_suffix( $model );
if ( $base !== $model ) {
return $this->lookup_pricing( $base );
}
return null;
}
/**
* Look up one exact model ID: hardcoded table first, then cached model list.
*
* Side effects: may fetch the models list over HTTP on cache miss
* (via get_available_models()).
*
* @param string $model Model ID (exact match, no normalization).
*
* @return array{prompt: float, completion: float}|null Per-million USD pricing, or null on miss.
*/
private function lookup_pricing( string $model ): ?array {
$pricing = self::MODEL_PRICING[ $model ] ?? null;
if ( null !== $pricing ) {
return $pricing;
}
foreach ( $this->get_available_models() as $m ) {
if ( $m['id'] === $model && isset( $m['pricing'] ) ) {
return $m['pricing'];
}
}
return null;
}
/**
* Strip a trailing date-snapshot suffix (e.g. '-20260423') from a model ID.
*
* Only a dash followed by an 8-digit, 20-prefixed date at the very end
* is treated as a snapshot suffix. Any other trailing digit run (e.g.
* 'foo-202612345') is part of the model name and left untouched.
*
* Side effects: none — pure string transformation.
*
* @param string $model Model ID.
*
* @return string Base model ID, or the input unchanged when no snapshot suffix is present.
*/
private function strip_snapshot_suffix( string $model ): string {
$base = preg_replace( '/-20\d{6}$/', '', $model );
return is_string( $base ) ? $base : $model;
}
/**
* Get the decrypted API key from options.
*