The X API charges $0.005 per post read on pay-per-use, caps those plans at 3 million post reads a month, and documents about 4-5 seconds of P99 latency on its filtered stream. Truth Social's Truth API is an institutional feed with no public price. TweetStream's live seven-day median X post detection time is 170 ms.
TweetStream X post detection speed
- TweetStream's median X post detection time over the seven days to October 3, 2026 was 170 ms, across 832,531 posts. Source: Live speed report.
- TweetStream's clock runs from X's post timestamp to the moment a TweetStream server first receives the post. It leaves out the WebSocket hop to your host, your own processing, and order execution. Source: How TweetStream measures speed.
TweetStream plan prices
- Minimum: $199/mo, or $139/mo billed annually. Up to 50 tracked accounts and 3 WebSocket connections. Source: TweetStream pricing.
- Pro: $499/mo, or $349/mo billed annually. Up to 250 tracked accounts, 10 WebSocket connections, history replay, and supported Trump and White House Truth Social posts. Source: TweetStream pricing.
- Scale: from $750/mo with custom limits. No trial. Source: TweetStream pricing.
- Ultra Speed: from $1,500/mo for 10 selected accounts, with a 24-hour trial. Source: TweetStream pricing.
- Minimum and Pro trials: 3 days, 5 tracked accounts, and 1 WebSocket. Source: TweetStream pricing.
- Every plan includes live X, Discord routing, news from 19 publications, pump.fun callouts, FOMO theses and token verifications, and posts, replies, and quotes from supported Binance Square accounts. Source: TweetStream pricing.
X API pricing in 2026
- Pay-per-use X API plans charge $0.005 for each post read and $0.010 for each user read. Source: X API pricing docs; X API cost calculator.
- Pay-per-use X API plans are capped at 3 million post reads per monthly billing cycle. Source: X API pricing docs; X API cost calculator.
- The X API charges for each post or user once per 24-hour UTC day, which X describes as a soft guarantee. Source: X API pricing docs; X API cost calculator.
- X API pay-per-use pricing has no contract, subscription, or minimum spend. Source: X API pricing docs; X API cost calculator.
X API filtered stream speed and limits
- X documents its filtered stream at "approximately 4-5 seconds of P99 latency". Source: X filtered stream docs.
- On pay-per-use, X's filtered stream allows 1 connection and 1,000 rules of up to 1,024 characters each. Source: X filtered stream docs.
- X's lower-latency Powerstream is offered only on select Enterprise plans, with no public price. Source: X Powerstream docs.
Truth API access and reported prices
- Trump Media announced Truth API on July 16, 2026: a licensed business-to-business feed of posts from the highest-ranking Truth Social accounts, for institutional customers from August 1, 2026. Source: Trump Media release, July 16, 2026.
- Truth API includes an archive of Truth Social posts back to 2022. Trump Media has not published a price. Source: Trump Media release, July 16, 2026.
- Trump Media's CEO said Truth API contracts generally run $60,000 to $100,000 a month, with more than 10 customers signed, mostly high-frequency trading firms. Source: CBS News, August 12, 2026.
- TweetStream includes supported Trump and White House Truth Social posts on Pro, Scale, and Ultra Speed. TweetStream's X speed figures do not cover Truth Social posts. Source: Truth Social API options.
Speed claims published by other X alert services
| Service | Their published figure | Source |
|---|---|---|
| 1322 | Self-reported, unverified: standard X delivery typically 150 to 250 ms | 1322 pricing |
| Xanguard | Self-reported, unverified: median tweet detection about 270 ms on paid plans, with 95% under 500 ms | Xanguard B2B |
| X-Relay | Self-reported, unverified: fastest single detection 281 ms out of 51,655 over 72 hours ending August 29, 2026 (their record, not a median) | X-Relay latency |
The services start and stop their clocks at different points, and X-Relay's figure is a single best result where the others are typical values, so the numbers don't rank the services. Test the same watchlist before you choose.