HumanLayer VS crystl
Compare HumanLayer VS crystl, what is the difference between HumanLayer and crystl?
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Summarize
HumanLayer summarize
HumanLayer is an API and SDK that enables tool-calling AI Agents to contact humans for help, feedback, and approvals.
HumanLayer Landing Page
crystl summarize
crystl Landing Page
Compare Details
HumanLayer details
| Categories | AI Agent, AI API, AI Developer Tools, AI Workflow, Large Language Models (LLMs) |
| HumanLayer Website | https://humanlayer.dev?utm_source=toolify |
| Added Time | December 07 2024 |
| HumanLayer Pricing | -- |
crystl details
| Categories | AI Agent, AI Code Assistant, AI Developer Tools, AI Code Generator |
| crystl Website | https://crystl.dev?utm_source=toolify |
| Added Time | June 21 2026 |
| crystl Pricing | -- |
Comparison of usage
How to use HumanLayer?
Integrate the HumanLayer SDK into your AI agent workflow. Use the @hl.require_approval() decorator to block function calls requiring human oversight. Contact humans through various channels and route approvals to specific teams or individuals.
How to use crystl?
Download the app for macOS, organize your projects into 'gems', and launch your preferred CLI AI agents within isolated 'shards'. Use the built-in interface to track progress, handle approval requests, and manage multiple parallel agent sessions.
Compare Pros between HumanLayer and crystl
Core features of HumanLayer
- Require Human Approval for Function Calls
- OmniChannel Contact (Slack, Email, Discord)
- Advanced Approval Workflows with Escalations and Timeouts
- Human as Tool (hl.human_as_tool())
- Granular Routing of Approvals
- LLM and Framework Agnostic
Core features of crystl
- Gems & shards project organization
- Parallel agent sessions with isolated git worktrees
- Unified approval panels, notifications, and session colors
- History navigator for searching across agent conversations and tool calls
- Scriptable CLI guild membership for shell-based orchestration
- Automatic session backup and restore
- Remote development tunnel via SSH with full interface feature support
- Starter bundles for pre-configuring instructions, rules, and MCP settings
- Project optimizer to scan and fix agent configuration gaps
- Crystl Quest for roundtable multi-agent orchestration
Compare Use Cases
Use cases for HumanLayer
- AI agents requiring human approval for critical decisions.
- Workflows needing human feedback to improve agent performance.
- Agentic AI workflows that need human oversight for production-grade reliability.
- Automated lead generation with human feedback on lead quality.
Use cases for crystl
- Running multiple AI agent instances simultaneously on the same repository without merge or state conflicts.
- Monitoring and approving AI tool calls and file system access from a single dashboard.
- Reviewing historical Claude Code conversations and commands across an entire project gem.
- Pre-configuring new development environments with standard CLAUDE.md files and MCP servers.
Different Plan between HumanLayer and crystl
HumanLayer
$0/month
Free forever for Hackers and Tinkerers. Works with all popular frameworks. 100 operations/month. Pay as you go ($20/200 addt'l). Send to Slack, Email, Discord. Up to 10 active users. Limited Data Retention.
$500/month
Collaborate and scale. Remove HumanLayer Branding (BYO app/keys). Includes 2000 operations/month ($18/200 add'l). Advanced Approval Workflows w/ Escalations and Timeouts. Learning and Auto Approvals. Channels for MSTeams, SMS, RCS. Priority Support. 180-day retention on feedback datasets export.
Custom
Deploy into your Private VPC or on-prem. RBAC and SSO support. Volume discounts. Custom notification channels. Expert Advice on custom-built agents for sales, marketing, hiring, and more.
crystl
$0/forever
Includes isolated shards, MCP server config, API key storage, split view, history navigator, session autosave & restore, Metal GPU rendering, and facet inserts.
$85/year
Includes everything in Free, plus: up to 3 devices, prompt library integration, formations with session restore, CLI orchestration, crystl on iPhone (coming soon), and priority support.
HumanLayer's traffic
HumanLayer is the one with 197.4K monthly visits and 00:00:24 Avg.visit duration. HumanLayer has a Page per visit of 1.54 and a bounce rate of 48.52%.
Visit Over Time
| Monthly Visits | 197.4K |
| Avg·visit Duration | 00:00:24 |
| Page per Visit | 1.54 |
| Bounce Rate | 48.52% |
crystl's traffic
crystl is the one with 62 monthly visits and 00:00:00 Avg.visit duration. crystl has a Page per visit of 1.09 and a bounce rate of 40.97%.
Visit Over Time
| Monthly Visits | 62 |
| Avg·visit Duration | 00:00:00 |
| Page per Visit | 1.09 |
| Bounce Rate | 40.97% |
Geography
The top 5 countries/regions for HumanLayer are:Vietnam 21.08%, United States 10.63%, China 6.89%, India 3.53%, South Korea 2.74%
Top 5 Countries/regions
 | 21.08% |
 | 10.63% |
 | 6.89% |
 | 3.53% |
 | 2.74% |
Geography
The top 2 countries/regions for crystl are:Poland 54.28%, United States 45.72%
Top 2 Countries/regions
 | 54.28% |
| 45.72% |
Traffic Sources
The 6 main sources of traffic to HumanLayer are:vs_sourcesSearchOrganic 41.63%, Direct 27.16%, Referrals 15.87%, vs_sourcesSocialOrganic 11.21%, vs_sourcesGenAi 3.42%, Mail 0.71%, vs_sourcesAffiliate 0.00%, vs_sourcesDisplayAds 0.00%, vs_sourcesSearchPaid 0.00%, vs_sourcesSocialPaid 0.00%
vs_sourcesSearchOrganic | 41.63% |
Direct | 27.16% |
Referrals | 15.87% |
vs_sourcesSocialOrganic | 11.21% |
vs_sourcesGenAi | 3.42% |
Mail | 0.71% |
vs_sourcesAffiliate | 0.00% |
vs_sourcesDisplayAds | 0.00% |
vs_sourcesSearchPaid | 0.00% |
vs_sourcesSocialPaid | 0.00% |
Traffic Sources
The 6 main sources of traffic to crystl are:Mail 0, vs_sourcesGenAi 0, Direct 0, vs_sourcesAffiliate 0, Referrals 0, vs_sourcesDisplayAds 0, vs_sourcesSearchPaid 0, vs_sourcesSocialPaid 0, vs_sourcesSearchOrganic 0, vs_sourcesSocialOrganic 0
Mail | 0 |
vs_sourcesGenAi | 0 |
Direct | 0 |
vs_sourcesAffiliate | 0 |
Referrals | 0 |
vs_sourcesDisplayAds | 0 |
vs_sourcesSearchPaid | 0 |
vs_sourcesSocialPaid | 0 |
vs_sourcesSearchOrganic | 0 |
vs_sourcesSocialOrganic | 0 |
Which is better: HumanLayer or crystl?
HumanLayer might be a bit more popular than crystl.As you can see, HumanLayer has 197.4K monthly visits, while crystl has 62 monthly visits. So more people choose HumanLayer. So the odds are that people will recommend HumanLayer more on social platforms.
HumanLayer has an Avg.visit duration of 00:00:24, while crystl has an Avg.visit duration of 00:00:00. Also, HumanLayer has a page per visit of 1.54 and a Bounce Rate of 48.52%. crystl has a page per visit of 1.09 and a Bounce Rate of 40.97%.
The main users of HumanLayer are Vietnam, United States, China, India, South Korea, with the following distribution: 21.08%, 10.63%, 6.89%, 3.53%, 2.74%.
The main users of crystl are Poland, United States, with the following distribution: 54.28%, 45.72%.
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