0a68741945
Replaces Cloudflare Workers AI (FLUX.1 schnell) as the default image provider with OpenRouter, which offers FLUX.2 Pro, Seedream 3.0, Gemini Flash Image, and GPT Image 1 at comparable or better pricing. - New provider class (3-file split: provider, pricing, support) reuses the existing OpenRouter API key and Cloudflare AI Gateway - Admin settings: new Image Provider dropdown (openrouter/cloudflare), model picker shows all available image models from both providers - Image pipeline auto-selects the configured provider at construction - Cost logging now uses actual model name instead of hardcoded flux-1-schnell - Default model changed to black-forest-labs/flux-2-pro ($0.03/image) - Unit tests for pricing resolution and provider response parsing Cost impact: FLUX.2 Pro at $0.03/image vs schnell at $0.0007/image — ~43x more expensive per image, but dramatically better quality. At 2 images/article × 1 article/day = ~$1.80/month. Seedream 3.0 ($0.003) available as a budget alternative. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
80 lines
2.7 KiB
PHP
80 lines
2.7 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* Pricing + model-id resolution helpers for the OpenRouter image provider.
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*
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* Mirrors the Cloudflare pricing helper pattern. Each model's cost per image
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* is a flat rate sourced from OpenRouter's pricing page (April 2026).
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*
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* Triggered by: PRAutoBlogger_OpenRouter_Image_Provider (both generate_image()
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* and estimate_cost() delegate here).
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* Dependencies: None — pure calculation + option reads.
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*
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* @see class-openrouter-image-provider.php — Caller.
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* @see class-cloudflare-image-pricing.php — Sibling pattern for Cloudflare.
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*/
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class PRAutoBlogger_OpenRouter_Image_Pricing {
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/**
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* Flat per-image cost (USD) for each supported model, April 2026.
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* Update here when OpenRouter reprices or new models launch.
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*
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* @var array<string, float>
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*/
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private const COST_PER_IMAGE = [
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'black-forest-labs/flux-2-pro' => 0.03,
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'black-forest-labs/flux-1.1-pro' => 0.04,
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'black-forest-labs/flux-1.1-pro-ultra' => 0.06,
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'bytedance/seedream-3.0' => 0.003,
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'google/gemini-2.5-flash-preview:image' => 0.01,
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'openai/gpt-image-1' => 0.04,
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];
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/** @var string Default model when none is configured. */
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public const DEFAULT_MODEL = 'black-forest-labs/flux-2-pro';
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/**
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* Resolve the model identifier from a hint, falling back to site option,
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* then to the hardcoded default.
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*
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* @param string $hint Caller-supplied model identifier (may be empty).
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* @return string OpenRouter model id.
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*/
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public function resolve_model( string $hint ): string {
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$hint = trim( $hint );
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if ( '' === $hint ) {
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$hint = (string) get_option( 'prautoblogger_image_model', self::DEFAULT_MODEL );
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}
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// Validate the model exists in our cost table; fall back to default.
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if ( ! isset( self::COST_PER_IMAGE[ $hint ] ) ) {
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return self::DEFAULT_MODEL;
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}
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return $hint;
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}
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/**
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* Estimate USD cost for a single image at the given model.
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*
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* OpenRouter image models use flat per-image pricing, not per-megapixel.
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* Width/height are accepted for interface compatibility but don't affect cost.
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*
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* @param int $width Width in pixels (unused for flat pricing).
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* @param int $height Height in pixels (unused for flat pricing).
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* @param string $model Resolved OpenRouter model id.
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* @return float USD cost rounded to 6 decimals.
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*/
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public function estimate_cost( int $width, int $height, string $model ): float {
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return round( self::COST_PER_IMAGE[ $model ] ?? self::COST_PER_IMAGE[ self::DEFAULT_MODEL ], 6 );
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}
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/**
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* Get the full model cost table for admin display.
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*
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* @return array<string, float> Model id => cost per image in USD.
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*/
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public static function get_model_costs(): array {
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return self::COST_PER_IMAGE;
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}
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}
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