openrouter.php
165 lines
| 1 | <?php |
| 2 | |
| 3 | class Meow_MWAI_Engines_OpenRouter extends Meow_MWAI_Engines_OpenAI |
| 4 | { |
| 5 | |
| 6 | public function __construct( $core, $env ) |
| 7 | { |
| 8 | parent::__construct( $core, $env ); |
| 9 | } |
| 10 | |
| 11 | protected function set_environment() { |
| 12 | $env = $this->env; |
| 13 | $this->apiKey = $env['apikey']; |
| 14 | if ( $this->envType === 'openrouter' ) { |
| 15 | $this->endpoint = apply_filters( 'mwai_openrouter_endpoint', 'https://openrouter.ai/api/v1', $this->env ); |
| 16 | } |
| 17 | else { |
| 18 | throw new Exception( 'Unknown environment type: ' . $this->envType ); |
| 19 | } |
| 20 | } |
| 21 | |
| 22 | protected function build_headers( $query ) { |
| 23 | parent::build_headers( $query ); |
| 24 | $site_url = apply_filters( 'mwai_openrouter_site_url', get_site_url(), $query ); |
| 25 | $site_name = apply_filters( 'mwai_openrouter_site_name', get_bloginfo( 'name' ), $query ); |
| 26 | $headers = array( |
| 27 | 'Content-Type' => 'application/json', |
| 28 | 'Authorization' => 'Bearer ' . $this->apiKey, |
| 29 | 'HTTP-Referer' => $site_url, |
| 30 | 'X-Title' => $site_name, |
| 31 | 'User-Agent' => 'AI Engine', |
| 32 | ); |
| 33 | return $headers; |
| 34 | } |
| 35 | |
| 36 | private function truncate_float( $number, $precision = 4 ) { |
| 37 | $factor = pow( 10, $precision ); |
| 38 | return floor( $number * $factor ) / $factor; |
| 39 | } |
| 40 | |
| 41 | protected function get_service_name() { |
| 42 | return "OpenRouter"; |
| 43 | } |
| 44 | |
| 45 | public function get_models() { |
| 46 | return $this->core->get_option( 'openrouter_models' ); |
| 47 | } |
| 48 | |
| 49 | public function handle_tokens_usage( $reply, $query, $returned_model, $returned_in_tokens, $returned_out_tokens ) { |
| 50 | $returned_in_tokens = !is_null( $returned_in_tokens ) ? $returned_in_tokens : $reply->get_in_tokens( $query ); |
| 51 | $returned_out_tokens = !is_null( $returned_out_tokens ) ? $returned_out_tokens : $reply->get_out_tokens(); |
| 52 | |
| 53 | // This is how to retrieve the exact number of tokens used with OpenRouter. |
| 54 | // However, it doesn't work with streaming and it slows the request. |
| 55 | |
| 56 | if ( !empty( $reply->id ) ) { |
| 57 | $url = 'https://openrouter.ai/api/v1/generation?id=' . $reply->id; |
| 58 | try { |
| 59 | |
| 60 | // This is the CURL way |
| 61 | // $ch = curl_init(); |
| 62 | // curl_setopt( $ch, CURLOPT_URL, $url ); |
| 63 | // curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true ); |
| 64 | // curl_setopt( $ch, CURLOPT_HTTPHEADER, [ 'Authorization: Bearer ' . $this->apiKey ] ); |
| 65 | // curl_setopt( $ch, CURLOPT_USERAGENT, 'AI Engine' ); |
| 66 | // $res = curl_exec( $ch ); |
| 67 | // curl_close( $ch ); |
| 68 | // $res = json_decode( $res, true ); |
| 69 | |
| 70 | // This is the WordPress way |
| 71 | // It currently doesn't work with OpenRouter (for mysterious reasons) |
| 72 | // $res = wp_remote_get( $url, array( |
| 73 | // 'headers' => array( |
| 74 | // 'Authorization' => 'Bearer ' . $this->apiKey, |
| 75 | // 'User-Agent' => 'AI Engine', |
| 76 | // ), |
| 77 | // 'sslverify' => false, |
| 78 | // 'user-agent' => 'AI Engine', |
| 79 | // 'timeout' => 30, |
| 80 | // 'blocking' => false, |
| 81 | // ) ); |
| 82 | |
| 83 | if ( isset( $res['data'] ) ) { |
| 84 | $data = $res['data']; |
| 85 | $returned_model = $data['model']; |
| 86 | $returned_in_tokens = $data['tokens_prompt']; |
| 87 | $returned_out_tokens = $data['tokens_completion']; |
| 88 | $price = $res['usage']; |
| 89 | $usage = $this->core->record_tokens_usage( $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 90 | $reply->set_usage( $usage ); |
| 91 | return; |
| 92 | } |
| 93 | } |
| 94 | catch ( Exception $e ) { |
| 95 | error_log( $e->getMessage() ); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | $usage = $this->core->record_tokens_usage( $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 100 | $reply->set_usage( $usage ); |
| 101 | } |
| 102 | |
| 103 | public function get_price( Meow_MWAI_Query_Base $query, Meow_MWAI_Reply $reply ) { |
| 104 | return parent::get_price( $query, $reply ); |
| 105 | } |
| 106 | |
| 107 | public function retrieve_models() { |
| 108 | $url = 'https://openrouter.ai/api/v1/models'; |
| 109 | $response = wp_remote_get( $url ); |
| 110 | if ( is_wp_error( $response ) ) { |
| 111 | throw new Exception( 'AI Engine: ' . $response->get_error_message() ); |
| 112 | } |
| 113 | $body = json_decode( $response['body'], true ); |
| 114 | $models = array(); |
| 115 | foreach ( $body['data'] as $model ) { |
| 116 | $family = "n/a"; |
| 117 | $maxCompletionTokens = 4096; |
| 118 | $maxContextualTokens = 8096; |
| 119 | $priceIn = 0; |
| 120 | $priceOut = 0; |
| 121 | $family = explode( '/', $model['id'] )[0]; |
| 122 | if ( isset( $model['top_provider']['max_completion_tokens'] ) ) { |
| 123 | $maxCompletionTokens = (int)$model['top_provider']['max_completion_tokens']; |
| 124 | } |
| 125 | if ( isset( $model['context_length'] ) ) { |
| 126 | $maxContextualTokens = (int)$model['context_length']; |
| 127 | } |
| 128 | if ( isset( $model['pricing']['prompt'] ) && $model['pricing']['prompt'] > 0 ) { |
| 129 | $priceIn = floatval( $model['pricing']['prompt'] ) * 1000; |
| 130 | $priceIn = $this->truncate_float( $priceIn ); |
| 131 | } |
| 132 | if ( isset( $model['pricing']['completion'] ) && $model['pricing']['completion'] > 0 ) { |
| 133 | $priceOut = floatval( $model['pricing']['completion'] ) * 1000; |
| 134 | $priceOut = $this->truncate_float( $priceOut ); |
| 135 | } |
| 136 | |
| 137 | $tags = [ 'core', 'chat' ]; |
| 138 | // If the name contains (beta), (alpha) or (preview), add 'preview' tag and remove from name |
| 139 | if ( preg_match( '/\((beta|alpha|preview)\)/i', $model['name'], $matches ) ) { |
| 140 | $tags[] = 'preview'; |
| 141 | $model['name'] = preg_replace( '/\((beta|alpha|preview)\)/i', '', $model['name'] ); |
| 142 | } |
| 143 | // If the name includes 'Vision', add 'vision' tag |
| 144 | if ( preg_match( '/vision/i', $model['name'], $matches ) ) { |
| 145 | $tags[] = 'vision'; |
| 146 | } |
| 147 | $models[] = array( |
| 148 | 'model' => $model['id'], |
| 149 | 'name' => trim( $model['name'] ), |
| 150 | 'family' => $family, |
| 151 | 'mode' => 'chat', |
| 152 | 'price' => array( |
| 153 | 'in' => $priceIn, |
| 154 | 'out' => $priceOut, |
| 155 | ), |
| 156 | 'type' => 'token', |
| 157 | 'unit' => 1 / 1000, |
| 158 | 'maxCompletionTokens' => $maxCompletionTokens, |
| 159 | 'maxContextualTokens' => $maxContextualTokens, |
| 160 | 'tags' => $tags |
| 161 | ); |
| 162 | } |
| 163 | return $models; |
| 164 | } |
| 165 | } |