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<?php |
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namespace WPDeveloper\BetterDocs\AI\Providers; |
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use WPDeveloper\BetterDocs\Utils\AIHelper; |
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|
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/** |
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* OpenAI Chat Completions provider. |
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* |
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* Adds the GPT-5 family handling on top of the shared OpenAI-compatible base: |
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* GPT-5 models require `max_completion_tokens`, reject a custom temperature, and |
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* bill internal reasoning against the output budget — so we send a low |
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* `reasoning_effort` to avoid empty completions. The original GPT-5 generation |
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* accepts `minimal`; the gpt-5.x point releases (e.g. gpt-5.5) dropped it and |
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* need `none` instead (see default_reasoning_effort()). |
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* |
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* @since 4.4.0 |
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*/ |
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class OpenAIProvider extends OpenAICompatibleProvider { |
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|
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public function id() { |
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return 'openai'; |
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} |
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|
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public function label() { |
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return 'OpenAI'; |
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} |
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|
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protected function base_url() { |
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return 'https://api.openai.com/v1'; |
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} |
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|
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/** |
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* {@inheritDoc} |
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*/ |
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protected function build_payload( $model, $messages, $max_tokens, $temperature = null ) { |
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if ( 0 === strpos( (string) $model, 'gpt-5' ) ) { |
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return array( |
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'model' => $model, |
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'messages' => $messages, |
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'max_completion_tokens' => (int) $max_tokens, |
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'reasoning_effort' => apply_filters( 'betterdocs_openai_gpt5_reasoning_effort', $this->default_reasoning_effort( $model ), $model, $max_tokens ), |
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); |
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} |
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|
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return parent::build_payload( $model, $messages, $max_tokens, $temperature ); |
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} |
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|
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/** |
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* Default reasoning_effort for a gpt-5* model. |
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* |
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* The original GPT-5 generation (gpt-5, gpt-5-mini, gpt-5-nano) accepts |
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* 'minimal'. The gpt-5.x point releases (e.g. gpt-5.5) dropped 'minimal' |
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* from the API and only accept none|low|medium|high; sending 'minimal' |
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* returns a 400 "Unsupported value: 'reasoning_effort'". For those we |
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* default to 'none' — no reasoning tokens, the fastest option, leaving the |
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* whole token budget for visible output (closest to gpt-5 'minimal' |
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* behaviour). Override per model via the |
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* betterdocs_openai_gpt5_reasoning_effort filter. |
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* |
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* @param string $model OpenAI model identifier. |
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* @return string reasoning_effort value. |
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*/ |
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protected function default_reasoning_effort( $model ) { |
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return AIHelper::is_gpt5_point_release( $model ) ? 'none' : 'minimal'; |
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} |
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} |
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