Narwhal unifies Kalshi and Polymarket odds on economics, central banks, metals and energy. Oddpool provides venue analytics. It joined Kalshi in September 2026 and closed new subscriptions; existing subscriptions and free accounts continue.
Choose Narwhal for economic and commodity odds through REST, MCP and paid WebSocket streaming. Existing Oddpool users retain arbitrage, spreads, whale tracking and order-book analytics.
This compares Narwhal's supported odds topics with Oddpool's analytics and access for existing accounts. Narwhal API is owned and operated by Nusantara Ventures, LLC.
| Requirement | Narwhal API | Oddpool |
|---|---|---|
| Free tier | ✓ 5,000 requests/month | ✓ Existing Free: 1,000/month, 1/second, one WebSocket connection |
| Cheapest paid plan | Basic: $59/month; $590/year available | ✗ New subscriptions closed; listed Pro: $30/month |
| Update speed | Free: previous day's close; Basic/Pro: live | WebSocket order books, trades and probability distributions |
| History | Free: 12 months; Basic: 5 years; available records only | Historical APIs; depth not stated |
| Coverage | Kalshi/Polymarket: economics, central banks, metals, energy | Kalshi and Polymarket data and analytics |
| Interfaces | REST, MCP; Basic/Pro: WebSocket | REST and WebSocket; no MCP server found |
| SDKs | ✓ Official Python and TypeScript SDKs | Not published |
| Commercial use on free tier | ✓ Commercial apps; resale needs Enterprise | Not published |
Existing subscriptions and free accounts continue; listed Pro and Premium plans are unavailable to new subscribers.
| Requests per month | Narwhal API | Oddpool |
|---|---|---|
| 1,000 | Free: $0/month | Existing Free accounts only: $0 |
| 10,000 | Basic: $59/month | Unavailable to new subscribers |
| 100,000 | Basic: $59/month | Unavailable to new subscribers |
List prediction topics
Oddpool no longer accepts new subscriptions, so this comparison omits a rival request example for developers seeking a new account.
# Change: URL and key
curl \
"https://api.narwhalapi.com/v1/predictions/topics" \
-H "Authorization: Bearer YOUR_API_KEY"Narwhal Free includes 5,000 successful requests each month and permits commercial apps. Use that allowance for a dashboard, scheduled data fetches or an agent integration. Move to Basic for 100,000 monthly requests as usage grows, with the same account and authentication.
REST and hosted MCP reach the same data through one account. Your application can fetch JSON while an agent uses the hosted tools, with every successful call counted once against the shared allowance. One quota makes the combined workload straightforward to budget.
Narwhal gives Kalshi and Polymarket one schema for economic releases, central bank decisions, metals and energy. Events use scalar, binary, extremes and timing shapes and name their official resolution source. Economic events link to the Narwhal endpoint publishing the actual value. Odds history supports intervals from 1 minute to daily.
Oddpool suits existing users needing cross-venue analytics with Kalshi and Polymarket data: arbitrage scanning, spreads, whale tracking, search, historical order books and trades. WebSocket feeds cover order books, trades and probability distributions; historical and search APIs appear on every tier. Opinion joined its arbitrage scanner in February 2026. Oddpool joined Kalshi in September 2026; new subscriptions are closed, while existing subscriptions and free accounts continue.
Yes. Narwhal Free includes 5,000 successful requests per month, commercial app use and both REST and hosted MCP access. Free odds use the previous day's close; Basic and Pro provide live odds and a WebSocket stream.
Oddpool joined Kalshi in September 2026 and closed new subscriptions. Existing subscriptions and free accounts continue. Pricing still lists Pro at $30/month and Premium at $100/month, both unavailable to new subscribers. Historical and search APIs appear on every tier; history depth is not stated.
Replace the request URL and authentication, then map the JSON response into your application's fields. The examples use standard fetch in JavaScript and requests in Python, so integration fits an ordinary HTTP client. Keep your key on the server and carry the response's units, dates and missing values into your display or calculations.
The shared cap applies to successful REST and MCP requests together. There are no automatic overage charges. Basic includes 100,000 monthly requests; quotas reset each month even when you pay yearly.
The comparison uses Narwhal's current public contract and the following first-party competitor pages.
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