# PreIPO Feed – OpenAI vs Anthropic Side-by-Side Comparison

> PreIPO Feed – OpenAI vs Anthropic Side-by-Side Comparison is a paid API for AI agents from preipo-feed.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-16).

Returns a structured JSON comparison of OpenAI and Anthropic across key pre-IPO financial metrics including revenue, valuations, funding rounds, IPO status, compute obligations, and cash, each with source URLs and verification grades.

## Facts

- Endpoint: GET https://preipo-feed.vercel.app/preipo/compare/openai-anthropic?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/preipo-feed-openai-vs-anthropic-side-by-side-comparison-937eb8d2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ql2QpYRLNEYD-dbS0LAZu

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability preipo-feed-openai-vs-anthropic-side-by-side-comparison-937eb8d2
```

Example prompt: Pull up the latest side-by-side comparison of OpenAI and Anthropic's pre-IPO financials — I want to see their revenues, valuations, funding rounds, IPO status, and valuation-to-run-rate multiples all in one place with source links.

## When to prefer this

Choose this endpoint when you need a single structured JSON response comparing OpenAI and Anthropic across the most important pre-IPO financial dimensions simultaneously, with provenance and verification grades included. It is preferable over scraping individual endpoints for each company when you want a ready-made, sourced comparison rather than raw filings or live on-chain data.

## Known failure modes

- Stale data if upstream sources have not been re-scraped recently
- Partial gaps in output when official figures are not publicly disclosed
- HTTP 402 if payment header is missing or USDC balance insufficient
- HTTP 500 if the upstream data pipeline fails
- Some verification grades may be low if data comes from secondary sources

## How this service works

OpenAI vs Anthropic side by side as JSON: full-year revenue, latest revenue run-rate, last private round and post-money valuation, IPO status and valuation target, compute obligations, cash, and valuation-to-run-rate multiples. Every value keeps its source URL, verification grade and value type; gaps are listed.

## Output

A JSON object containing parallel financial profiles for OpenAI and Anthropic, each covering full-year revenue, the latest revenue run-rate, last private funding round size, post-money valuation, IPO filing status and target valuation, compute obligations, cash position, and valuation-to-run-rate multiples. Every data point includes its source URL, a verification grade (indicating data quality/confidence), and a value type label. Any unavailable fields are listed as explicit gaps.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/preipo-feed-openai-vs-anthropic-side-by-side-comparison-937eb8d2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preipo-feed.vercel.app](https://www.zero.xyz/host/preipo-feed.vercel.app/llms.txt)