beacon.sh vs Checkly
beacon.sh and Checkly are both uptime & monitoring tools. beacon.sh is aimed at developers and enterprise, while Checkly is aimed at developers. Both have a free plan.
Open-source memory layer that carries lessons across coding agents
Synthetic monitoring as code with Playwright
| Pricing | Open source | Freemium · $24 |
| Starting price | Not published | $24/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Developers, Enterprise, Small businesses | Developers |
| Platforms | macos, windows, linux, web | web |
| Country | US | DE · 2018 |
| Rating | — | — |
Choose beacon.sh if
Developers and engineering teams using several AI coding agents who want shared, reviewed memory and a full record of agent activity.
- MIT-licensed core that runs locally without lock-in to one harness
- One timeline for every agent and machine, including token spend
- Turns repeated walkthroughs into skills every agent can reuse
Look elsewhere if: Teams that only need a shared knowledge store for agents and people, or want to train their own models from traces (Context Engine, Overmind).
Choose Checkly if
Engineering teams using Playwright.
- Tests and monitoring unified
- Developer-first workflow
- Playwright native
Look elsewhere if: Non-technical uptime monitoring (Better Stack).
beacon.sh vs Checkly pricing
beacon.sh
- Open source$0MIT-licensed local endpoint, JSONL traces, local dashboard
- Beacon Cloud$020+ agents, 50 findings, session search over MCP, daily digest
- Cloud Pro$20/moBilled annually (save 25%); unlimited findings, memories over MCP
- Cloud Team$30/seat/moBilled annually plus $10/mo base, up to 20 seats, shared traces
- EnterpriseCustomApproval gates, SSO, RBAC, audit logs, your own bucket and region
Checkly
- Hobby$010 uptime monitors; 10k API, 1k browser runs/mo
- Starter$24/moBilled annually; 50 monitors; 25k API, 3k browser runs
- Team$64/moBilled annually; 75 monitors; 100k API, 12k browser runs
- EnterpriseCustomCustom monitors, 1-sec frequency
beacon.sh · Key features
- Session capture across Claude Code, Cursor, Codex, OpenCode and 20+ other harnesses
- OpenTelemetry-based event model stored as local JSONL by default
- Reviewed memories and skills served to agents over MCP and Agent Skills
- Cloud findings with one-click skills, fix prompts and an evidence trail
- Full session replay with prompts, commands, edits, approvals and tokens
- Terminal trace browser and read-only local dashboard
Cons
- Pro and Team prices are shown only with annual billing
- Team price is listed as $30 per seat in one place and $40 in the comparison table
- Free cloud tier caps findings at 50
Checkly · Key features
- Playwright browser checks
- API checks with assertions
- Monitoring as code via CLI
- CI/CD integration
- Global and private locations
- OpenTelemetry traces
Cons
- Requires coding
- Run-based pricing
- Not a full observability suite
beacon.sh vs Checkly: FAQ
Do beacon.sh and Checkly have a free plan?
Yes, both beacon.sh and Checkly have a free plan; paid plans add more usage and features.
Which is better for small businesses, beacon.sh or Checkly?
beacon.sh lists small businesses as a core audience, while Checkly is aimed more at developers.