Options flow, dark pool & GEX tools compared
22 tools, prices checked 2026-10-16. Lowest price = cheapest listed plan (incl. annual-billing equivalents). * = partial data.
| Tool | Category | From /mo | Free tier | Data delay | AI | API/MCP |
|---|---|---|---|---|---|---|
| Gextool (GEX) | GEX | Free | Yes, no account; 3 added tickers/day | ~15 min (CBOE delayed), snapshots every 15 min | unknown | unknown |
| GammaGrid | GEX | Free | Free while in beta; open source (AGPL-3.0) self-host | unknown | unknown | unknown |
| SquawkFlow | flowdark poolGEX | Free | Fully free, no account, no paid tier | 10 min delayed | AI narration, morning briefs, copilot | unknown |
| Barchart | flow | $8.25 | Yes: limited (1 watchlist, truncated screeners); UOA full access Premier only | unknown | unknown | unknown |
| Stocknear | flowdark pool | $10 | Yes: Basic $0 (10 credits/mo, 1 watchlist) | Real-time options flow on Pro | AI agent chat (credits) | MCP support on Pro (120 calls/min) |
| GEX Metrix | GEX | $19 | Yes: delayed data with intraday OI model | Delayed (free) | unknown | unknown |
| LuxAlgo | flow | $24.99 | Yes: charts, Orderflow suite 1-day lookback, 500 credits | unknown | Quant coding agent, backtesting assistant | Webhook automation |
| OptionStrat | flow | $39.99 | unknown | Live on paid plans | unknown | unknown |
| Unusual Whales | flowdark poolGEX | $42 | Yes: flow 2 trading days delayed, news 15 min, alerts 30 min delayed | Real-time on paid plans | Mr. Whale AI analyst / trade finder | Separate API plans (REST, WebSocket, MCP); prices not captured |
| SpotGamma | GEXflow | $45 | unknown | unknown | unknown | unknown |
| InsiderFinance | flowdark pool | $55 | unknown | Real-time | unknown | unknown |
| BlackBoxStocks | flowdark poolGEX | $59 | unknown | Real-time | unknown | unknown |
| Quant Data | flowdark poolGEX | $62.50 | No free tier; 7-day free trial on Standard | Real-time | unknown | REST API + MCP server, separate plan $149.99/mo |
| Tradytics | flowdark poolGEX | $69 | No; 15-day trial for $15 | unknown | AI-summarized news, AI-mined data | Discord bot (separate subscription) |
| Cheddar Flow | flowdark poolGEX | $75 | No free tier; 7-day free trial (Standard only) | Real-time | Cheddar AI; AI power alerts (Pro) | unknown |
| TrendSpider * | flow | $89 | No; 14-day trial for $1 (promo) | Real-time; OPRA options data add-on $9.50/mo (non-pro) | Sidekick AI (25 msgs/mo incl.; paid tiers $49–$349/mo), AI backtesting | unknown |
| FlowAlgo * | flowdark pool | $99 | Two-week trial offer mentioned | 500ms–15s typical | unknown | unknown |
| Market Chameleon | flow | $99 | Starter (free); 7-day trial on Premium | unknown | unknown | Data feeds (internal use) $500/mo each |
| Volland * | GEX | $99 | No (no trial per third-party review) | Updates every 2 min (0DTE widget every 5 min) | unknown | API on Universe/Institutional + $500 per 2,000 calls (third-party source) |
| MenthorQ | GEX | $129 | unknown | unknown | unknown | unknown |
| OptionsDepth | GEX | $166.67 | unknown | Pro: daily updates; Pro Max: every 10 min intraday; Enterprise: every 1 min | unknown | unknown |
| VolSignals * | flowGEX | $300 | unknown | unknown | unknown | unknown |