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feat: recognize OpenRouter :free models as zero-cost

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Models with the :free suffix (e.g. google/gemini-2.5-flash-preview:free)
are served at no charge by OpenRouter. The cost estimator now returns
$0.00 for these models instead of falling through to the conservative
$10/$30 per-million-token fallback.

No changes needed in the model picker or provider — :free models use
the same API endpoint and already appear in the registry.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
peptiderepo
2026-04-18 10:17:59 +07:00
parent 358a1bbc7e
commit 58cb4ed508
1 changed files with 5 additions and 0 deletions
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5
includes/providers/class-open-router-pricing.php
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@@ -114,6 +114,11 @@ class PRAutoBlogger_OpenRouter_Pricing {
* @return float Estimated cost in USD. * @return float Estimated cost in USD.
*/ */
public function estimate_cost( string $model, int $prompt_tokens, int $completion_tokens ): float { public function estimate_cost( string $model, int $prompt_tokens, int $completion_tokens ): float {
// OpenRouter `:free` suffix models cost nothing.
if ( ':free' === substr( $model, -5 ) ) {
return 0.0;
}
$pricing = self::MODEL_PRICING[ $model ] ?? null; $pricing = self::MODEL_PRICING[ $model ] ?? null;
// Fall back to cached model list pricing. // Fall back to cached model list pricing.