Forethought vs Sierra — Pricing, Plans, and Verified Costs (2026)
Both Forethought and Sierra use custom pricing — request quotes from each to compare.
See price history: Forethought · Sierra
How pricing works
These two tools don't price the same way, so the headline numbers below aren't directly comparable until you plug in your own volume.
- Forethought (Per Usage) — Forethought bills purely on usage. There is no fixed per-seat fee, so the monthly cost depends entirely on how much you consume.
- Sierra (Per Usage) — Sierra bills purely on usage. There is no fixed per-seat fee, so the monthly cost depends entirely on how much you consume.
Per-minute, per-credit and per-token rates exclude any downstream model, speech or telephony costs unless the vendor states otherwise.
AI customer support automation platform — Forethought SupportGPT combines automated ticket triage, sentiment analysis, and autonomous resolution. Enterprise-only, all pricing custom-quoted. Reported deals $50K-300K+/year depending on ticket volume. Customers include Upwork, Instacart, Grammarly.
AI-native customer experience platform founded by Bret Taylor (ex-Salesforce COO) and Clay Bavor (ex-Google). Positioned to compete with Ada + Decagon at the strategic enterprise level. All pricing custom-quoted, reported deals $200K-1M+/year. Customers include WeightWatchers, SonderMind, SoFi.
All plans compared
| Tier role | Plan | Forethought monthly | Forethought annual | Sierra monthly | Sierra annual |
|---|---|---|---|---|---|
| Enterprise | Enterprise | Custom | Custom | Custom | Custom |
Tier names differ across vendors. Rows are aligned by tier role, not name. Full tier structures on each tool's page.
What each is best for
Forethought is worth it if… mid-market and enterprise support ops that want AI-driven ticket triage + autonomous resolution without going all-in on Ada or Decagon. Reported deals $50K-300K+/year.
Sierra is worth it if… Sierra is only worth engaging with if you're a mid-market or enterprise support org running a serious evaluation of autonomous AI agents — the co-founders' pedigree (Bret Taylor ex-Salesforce COO) opens doors that other startups can't. Deal size $200K-1M+/year.
Bottom line: Similar positioning, closer to a preference call than a strategic one.
Choose Forethought over Sierra if…
Choose Forethought if…
- You want to pay only for actual usage (per usage, custom pricing).
- You match the profile Forethought is built for: mid-market and enterprise support ops that want AI-driven ticket triage + autonomous resolution without going all-in on Ada or Decagon.
- You need a general-purpose customer support option rather than a vertical-specific one.
Choose Sierra if…
- You want to pay only for actual usage (per usage, custom pricing).
- You match the profile Sierra is built for: only worth engaging with if you're a mid-market or enterprise support org running a serious evaluation of autonomous AI agents — the co-founders' pedigree (Bret Taylor ex-Salesforce COO) opens doors that other startups can't.
- You need a general-purpose customer support option rather than a vertical-specific one.
At a glance
| Forethought | Sierra | |
|---|---|---|
| Free plan | No | No |
| Entry price | Custom | Custom |
| Enterprise available | Yes | Yes |
| Pricing model | Per Usage | Per Usage |
| Last verified | — | September 20, 2026 |
| Full pricing | View full pricing | View full pricing |
Pricing last verified September 20, 2026. Tracked daily.