To classify or extract at volume, use GPT-5.6 Luna.

OpenAI Responses API, TypeScript

Start from this.

Edit the parts in capitals, then run it.

import OpenAI from "openai";

const openai = new OpenAI(); // reads OPENAI_API_KEY

export async function tagLead(lead: string) {
  const res = await openai.responses.create({
    model: "gpt-5.6-luna",
    input: [
      { role: "system", content: "Classify the lead. Industry definitions: SaaS = sells software on subscription; ADD THE REST. Use only facts in the input." },
      { role: "user", content: lead },
    ],
    text: {
      format: {
        type: "json_schema",
        name: "lead_tags",
        strict: true,
        schema: {
          type: "object",
          properties: {
            industry: { type: "string", enum: ["SaaS", "Fintech", "Healthcare", "Ecommerce", "Agency", "Other"] },
            company_size: { type: "string", enum: ["1-10", "11-50", "51-200", "201-1000", "1000+", "unknown"] },
            confidence: { type: "string", enum: ["high", "low"] },
          },
          required: ["industry", "company_size", "confidence"],
          additionalProperties: false,
        },
      },
    },
  });
  return JSON.parse(res.output_text);
}