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Pick up to three. Scores are curated estimates on a 0–10 scale. Lock-in: higher = worse.
| Dimension | Upstash QStash | Synadia Cloud (NATS) |
|---|---|---|
| Overall | 8.4 | 8.3 |
| Capability fit | 8.2 | 8.6 |
| Price / performance | 9.2 | 8.2 |
| Latency / reliability | 8.4 | 8.8 |
| Developer & agent DX | 9.2 | 8.0 |
| Privacy / data retention | 7.8 | 8.5 |
| Lock-in risk (higher = worse) | 3.5 | 3.8 |
| Maturity / track record | 8.0 | 8.5 |
| Pricing | As of 2026-09-14 (upstash.com/pricing/qstash): Free 1k messages/day, 50 GB, 1 MB max. PAYG $1 per 100k messages (unlimited/day, 10 MB, 1-year delay); bandwidth free to 50 GB then $… | As of 2026-09-14 (docs.synadia.com/cloud/pricing): Personal free (2 accounts, 10 connections, 5 GiB, 10 GiB net). Starter $49/mo (3 accounts, 100 conn, 10 GiB std / 1 GiB HA). Pro … |