fastbrowse vs Flagsmith
fastbrowse and Flagsmith are both developer tools tools aimed at developers and small businesses. fastbrowse costs less, from $29/mo versus $45/mo for Flagsmith. Both have a free plan.
Open-source browser agent that cites page quotes for every answer
Open-source feature flags and A/B tests, cloud or self-hosted
| Pricing | Open source · $29 | Open source · $45 |
| Starting price | $29/mo | $45/mo |
| Free plan | Yes | Yes |
| Free trial | — | 14 days |
| Built for | Developers, Small businesses, Enterprise | Developers, Small businesses, Enterprise |
| Platforms | web | web |
| Country | — | GB |
| Rating | — | — |
Choose fastbrowse if
Developers who want an open-source browser agent with cited answers, safe credential handling and low per-run model cost.
- MIT-licensed core that can be self-hosted
- Low model cost per run on the vendor's own benchmark
- Cited quotes make results easy to verify
Look elsewhere if: Teams that only need managed browser infrastructure or want the largest browser-agent community (Browserbase, Browser Use).
Choose Flagsmith if
Engineering teams that want open-source, self-hostable feature flags with optional cloud hosting and built-in experiments.
- Open source under BSD-3-Clause with a real self-hosting path
- Unlimited flags, environments and segments on every plan
- Wide SDK coverage including mobile and Flutter
Look elsewhere if: Teams that want flags bundled with product analytics or a large enterprise vendor ecosystem (PostHog, LaunchDarkly).
fastbrowse vs Flagsmith pricing
fastbrowse
- Free$0$2 of runs/mo, 1 concurrent run, 7-day history
- Starter$29/mo$35 of runs, 5 concurrent, secrets, schedules, webhooks
- Pro$199/mo$250 of runs, 25 concurrent, recordings, audit log
- Scale$999/mo$1,400 of runs, 100 concurrent, queue priority
- EnterpriseCustomDedicated browser fleet, custom retention and residency
Flagsmith
- Free$050k requests/mo, 1 team member, 1 project
- Start-Up$45/mo$40/mo billed yearly; 1M requests, 3 members, A/B testing
- Scale-Up$300/mo$250/mo yearly; 5M requests, SAML SSO, roles, audit logs
- EnterpriseCustomPrivate cloud or on-prem, SLA, onboarding, priority support
fastbrowse · Key features
- Indexed page controls with the Jev choice model picking each step
- Answers backed by verbatim page quotes checked before completion
- Scoped secrets resolved only on their permitted site, never in prompts
- Bitwarden CLI logins including one-time codes
- Approval gate that pauses irreversible actions
- Local Chrome, Browser Use Cloud or attach to a running browser via CDP
Cons
- Median run time was slower than Browser Use on the vendor's benchmark
- Open-source CLI defaults to a cloud browser needing a Browser Use key
- Monthly run allowances do not roll over
Flagsmith · Key features
- Feature flags and remote config with user, segment and percentage targeting
- Bayesian A/B experiments built directly on existing flags
- Scheduled flags, multivariate flags and change requests
- SDKs for JavaScript, React, iOS, Android, Flutter, Python, Go and Rust
- OpenFeature provider for cloud, private cloud and self-hosted setups
- Audit logs, roles and permissions for governance
Cons
- Free cloud plan allows only one team member
- SSO, roles and audit logs require Scale-Up at $250 or more a month
- Experiments v1 supports one primary metric per test
fastbrowse vs Flagsmith: FAQ
Which is cheaper, fastbrowse or Flagsmith?
fastbrowse starts at $29/mo and Flagsmith at $45/mo. Both prices are checked on the vendors' own pricing pages.
Do fastbrowse and Flagsmith have a free plan?
Yes, both fastbrowse and Flagsmith have a free plan; paid plans add more usage and features.