All files / src/providers/gemini Capabilities.ts

91.2% Statements 83/91
93.33% Branches 56/60
100% Functions 16/16
90.9% Lines 70/77

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import { ModelRegistry } from "../../models/ModelRegistry.js";
import { PricingRegistry } from "../../models/PricingRegistry.js";
import { ModelPricing } from "../../models/types.js";
 
export class Capabilities {
  static getContextWindow(modelId: string): number | null {
    const val = ModelRegistry.getContextWindow(modelId, "gemini");
    if (val !== undefined && val !== null) return val;
 
    const id = this.normalizeModelId(modelId);
    if (
      id.match(
        /gemini-2\.5-pro-exp-03-25|gemini-2\.0-flash|gemini-2\.0-flash-lite|gemini-1\.5-flash|gemini-1\.5-flash-8b/
      )
    ) {
      return 1_048_576;
    }
    Iif (id.match(/gemini-1\.5-pro/)) {
      return 2_097_152;
    }
    if (id.match(/gemini-embedding-exp/)) {
      return 8_192;
    }
    if (id.match(/text-embedding-004|embedding-001/)) {
      return 2_048;
    }
    if (id.match(/aqa/)) {
      return 7_168;
    }
    return 32_768;
  }
 
  static getMaxOutputTokens(modelId: string): number | null {
    const val = ModelRegistry.getMaxOutputTokens(modelId, "gemini");
    if (val !== undefined && val !== null) return val;
 
    const id = this.normalizeModelId(modelId);
    if (id.match(/gemini-2\.5-pro-exp-03-25/)) {
      return 64_000;
    }
    if (
      id.match(
        /gemini-2\.0-flash|gemini-2\.0-flash-lite|gemini-1\.5-flash|gemini-1\.5-flash-8b|gemini-1\.5-pro/
      )
    ) {
      return 8_192;
    }
    if (id.match(/text-embedding-004|embedding-001/)) {
      return 768;
    }
    Iif (id.match(/imagen-3/)) {
      return 4;
    }
    return 4_096;
  }
 
  static supportsVision(modelId: string): boolean {
    const model = ModelRegistry.find(modelId, "gemini");
    if (model?.modalities?.input?.includes("image")) return true;
 
    const id = this.normalizeModelId(modelId);
    if (id.match(/text-embedding|embedding-001|aqa/)) {
      return false;
    }
    return !!id.match(/gemini|flash|pro|imagen/);
  }
 
  static supportsTools(modelId: string): boolean {
    const model = ModelRegistry.find(modelId, "gemini");
    if (model?.capabilities?.includes("function_calling")) return true;
 
    const id = this.normalizeModelId(modelId);
    if (id.match(/text-embedding|embedding-001|aqa|flash-lite|imagen|gemini-2\.0-flash-lite/)) {
      return false;
    }
    return !!id.match(/gemini|pro|flash/);
  }
 
  static supportsStructuredOutput(modelId: string): boolean {
    const model = ModelRegistry.find(modelId, "gemini");
    if (model?.capabilities?.includes("structured_output")) return true;
 
    const id = this.normalizeModelId(modelId);
    if (id.match(/text-embedding|embedding-001|aqa|imagen/)) {
      return false;
    }
    return true;
  }
 
  static supportsSystemInstructions(_modelId: string): boolean {
    return true;
  }
 
  static supportsJsonMode(modelId: string): boolean {
    return this.supportsStructuredOutput(modelId);
  }
 
  static supportsEmbeddings(modelId: string): boolean {
    const model = ModelRegistry.find(modelId, "gemini");
    Iif (model?.modalities?.output?.includes("embeddings")) return true;
 
    const id = this.normalizeModelId(modelId);
    return !!id.match(/text-embedding|embedding|gemini-embedding/);
  }
 
  static supportsImageGeneration(modelId: string): boolean {
    const model = ModelRegistry.find(modelId, "gemini");
    if (
      model?.capabilities?.includes("image_generation") ||
      model?.modalities?.output?.includes("image")
    )
      return true;
 
    const id = this.normalizeModelId(modelId);
    return !!id.match(/imagen/);
  }
 
  static supportsTranscription(modelId: string): boolean {
    const model = ModelRegistry.find(modelId, "gemini");
    Eif (model?.modalities?.input?.includes("audio")) return true;
 
    const id = this.normalizeModelId(modelId);
    return !!id.match(/gemini|flash|pro/);
  }
 
  static supportsModeration(_modelId: string): boolean {
    return false;
  }
 
  static normalizeTemperature(temperature: number | undefined, _model: string): number | undefined {
    return temperature;
  }
 
  static getModalities(modelId: string): { input: string[]; output: string[] } {
    const input = ["text"];
    const output = ["text"];
    const id = this.normalizeModelId(modelId);
 
    if (this.supportsVision(id)) input.push("image", "video", "audio", "pdf");
    if (this.supportsImageGeneration(id)) output.push("image");
    if (this.supportsEmbeddings(id)) output.push("embeddings");
 
    return { input, output };
  }
 
  static getCapabilities(modelId: string): string[] {
    const caps = ["streaming"];
    const id = this.normalizeModelId(modelId);
    if (this.supportsTools(id)) caps.push("function_calling");
    if (this.supportsStructuredOutput(id)) caps.push("structured_output");
    if (this.supportsEmbeddings(id)) caps.push("embeddings");
    if (this.supportsImageGeneration(id)) caps.push("image_generation");
    return caps;
  }
 
  static getPricing(modelId: string): ModelPricing | undefined {
    return PricingRegistry.getPricing(modelId, "gemini");
  }
 
  private static normalizeModelId(modelId: string): string {
    return modelId.replace("models/", "");
  }
}