5b5286ca5b
FLUX.1 [dev] was removed from Cloudflare Workers AI in April 2026, returning HTTP 400 "No route for that URI". This removes it from the static model picker list and pricing calculations. Any saved setting referencing flux-1-dev gracefully falls through to flux-1-schnell via the null-coalesce in resolve_model(). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
79 lines
2.8 KiB
PHP
79 lines
2.8 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 Cloudflare image provider.
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*
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* Kept separate from the provider so the provider stays under the 300-line
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* cap and so cost estimation can be unit-tested without spinning up HTTP
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* mocks. Mirrors the `class-open-router-pricing.php` split.
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*
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* Triggered by: PRAutoBlogger_Cloudflare_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-cloudflare-image-provider.php — Caller.
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* @see class-open-router-pricing.php — Sibling pattern for LLM pricing.
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*/
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class PRAutoBlogger_Cloudflare_Image_Pricing {
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/**
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* Cloudflare Workers AI FLUX pricing (USD per megapixel), April 2026.
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* Single source of truth — update here if Cloudflare reprices.
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*/
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private const COST_PER_MP_SCHNELL_USD = 0.0011;
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/**
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* Short-alias → fully-qualified Workers AI model id.
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*
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* FLUX.1 [dev] was removed from Cloudflare Workers AI in April 2026
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* (returns HTTP 400 "No route for that URI"). Only schnell remains.
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* Any saved setting referencing flux-1-dev falls through to schnell
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* via the null-coalesce in resolve_model().
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*
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* @var array<string, string>
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*/
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private const MODEL_ALIAS_MAP = [
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'flux-1-schnell' => '@cf/black-forest-labs/flux-1-schnell',
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];
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/**
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* Normalize a caller's model hint to a fully-qualified Workers AI id.
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*
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* Accepts short aliases (`flux-1-schnell`), fully-qualified names
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* (`@cf/black-forest-labs/...`), or empty. Empty input falls back to
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* the site option, 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 Fully-qualified Workers AI model id suitable for the URL path.
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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', PRAUTOBLOGGER_DEFAULT_IMAGE_MODEL );
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}
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if ( 0 === strpos( $hint, '@cf/' ) ) {
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return $hint;
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}
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return self::MODEL_ALIAS_MAP[ $hint ] ?? self::MODEL_ALIAS_MAP['flux-1-schnell'];
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}
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/**
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* Estimate USD cost for a single image at the given dimensions.
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*
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* FLUX is priced per megapixel of output. We clamp the MP floor at
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* 0.01 so a tiny thumbnail doesn't round to zero and bypass the
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* budget check.
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*
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* @param int $width Width in pixels.
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* @param int $height Height in pixels.
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* @param string $model Fully-qualified Workers AI model id (call resolve_model first).
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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 $model ): float {
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$mp = max( 0.01, ( $width * $height ) / 1_000_000 );
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$rate = self::COST_PER_MP_SCHNELL_USD;
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return round( $mp * $rate, 6 );
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}
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}
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