Free plan US$0, "Free forever". Included credits are "1,000 one-time", i.e. a single 1,000-credit grant (not monthly); the Weekly refresh column shows "–", meaning no weekly top-up (only paid plans get Pro +2,000/week and Max +4,000/week, reset every 7 days and not accumulated). 1 workspace, cannot invite teammates. Concurrent executions capped at 10; rate limits of 50 sync runs/min, 200 async runs/min and 30 API endpoint calls/min; execution timeouts of 5 minutes (sync) and 90 minutes (async); storage of 5GB of files, up to 5 tables, up to 50,000 rows per table, 30 days log retention. Not included on the free plan: Sim Mailer (Inbox), KB Live Sync, Sandboxes, Slack Connect, Access Control, SSO, SOC2 Compliance, Self Hosting, Dedicated Support. When credits run out, the official docs state "usage is capped at your plan's included credits and runs will stop" (runs stop by default; paid plans can enable on-demand overage at US$0.005/credit). 1 credit = US$0.005 (docs). The source conflict recorded on 2026-08-09 ("pricing page monthly vs docs one-time") is resolved: on 2026-09-16 both the pricing page and docs.sim.ai/platform/costs show 1,000 one-time / Pro 6,000 per month / Max 25,000 per month. Sim is an open-source project. (Read directly from sim.ai/pricing and docs via playwright on 2026-09-16)
Cheapest paid plan: US$25 / user / mo（5 user ≈ US$125/mo）
The cloud platform has no free tier subscription; it has switched to one-time billing (see paid plans). The truly free offering is the open-source CLI: the official documentation states it can be installed via curl or pipx, provided Docker is running and you have an LLM API key from any supported provider (OpenAI/Anthropic/Google, etc.), meaning the software is free while inference costs are paid directly to the model provider; scan targets can be local code, a GitHub repo, or an online website, and the open-source version has no limit on scans or watermarks. The One-time Pentest plan includes “free retest after remediation”. (2026-09-09 browser direct read strix.ai/pricing)
US$25 per user/month: 6,000 credits/month + Weekly refresh of +2,000/week (reset every 7 days, not accumulated); annual billing averages US$21/month (site shows 15% off; docs state US$21.25/month = US$255/year); usage is capped at the plan's included credits by default, with optional on-demand overage at US$0.005/credit
Max
US$100 / user / mo（5 user ≈ US$500/mo）
US$100 per user/month: 25,000 credits/month + Weekly refresh of +4,000/week; annual billing averages US$85/month (15% off; docs state US$1,020/year); includes Sim Mailer (Inbox), KB Live Sync, Sandboxes and Slack Connect; does not include Access Control, SSO, SOC2, Self Hosting or Dedicated Support
Enterprise
Official quote (upon inquiry)
Pricing not published on the official site — contact sales
Strix
Plan
Price
What you get
One-time Pentest
US$59（One-time purchase）
Official website states From US$59/pentest (single penetration test): self‑service testing of apps/APIs/repos. Includes white‑box and authorized testing, verified vulnerabilities with proof‑of‑exploit, autofix PR, OWASP Top 10 coverage, free retest after remediation. 2026-09-09 browser direct read strix.ai/pricing.
Full Audit
US$2000（One-time purchase）
Official website states From US$2,000/audit (single deep audit): includes the full One-time Pentest, plus business logic and attack chain testing, formal SOC 2/ISO 27001 report, customized scope and test accounts, review by a CREST‑certified penetration tester, and same‑day results.
Enterprise
Official quote (upon inquiry)
客製（Get a quote）：跨所有環境的週期性稽核，含內部 apps 與基礎設施、自訂範圍與 SLA、SSO、稽核日誌、專屬成功經理。
Which one should you pick?
If you want to try before paying, Sim has a free plan and Strix does not — start with Sim.
Strix has no public paid plan; Sim starts at about US$25 / user / mo.
FAQ
Is there a free version of Sim?
Yes. Free plan US$0, "Free forever". Included credits are "1,000 one-time", i.e. a single 1,000-credit grant (not monthly); the Weekly refresh column shows "–", meaning no weekly top-up (only paid plans get Pro +2,000/week and Max +4,000/week, reset every 7 days and not accumulated). 1 workspace, cannot invite teammates. Concurrent executions capped at 10; rate limits of 50 sync runs/min, 200 async runs/min and 30 API endpoint calls/min; execution timeouts of 5 minutes (sync) and 90 minutes (async); storage of 5GB of files, up to 5 tables, up to 50,000 rows per table, 30 days log retention. Not included on the free plan: Sim Mailer (Inbox), KB Live Sync, Sandboxes, Slack Connect, Access Control, SSO, SOC2 Compliance, Self Hosting, Dedicated Support. When credits run out, the official docs state "usage is capped at your plan's included credits and runs will stop" (runs stop by default; paid plans can enable on-demand overage at US$0.005/credit). 1 credit = US$0.005 (docs). The source conflict recorded on 2026-08-09 ("pricing page monthly vs docs one-time") is resolved: on 2026-09-16 both the pricing page and docs.sim.ai/platform/costs show 1,000 one-time / Pro 6,000 per month / Max 25,000 per month. Sim is an open-source project. (Read directly from sim.ai/pricing and docs via playwright on 2026-09-16)
How much does Sim cost?
The cheapest is the plan from Sim named Pro, at about US$25 / user / mo.
Does Sim support Chinese?
Sim only partially supports Chinese.
Is there a free version of Strix?
No public free plan — a subscription is required.
How much does Strix cost?
The cheapest is the plan from Strix named One-time Pentest, at about US$59（One-time purchase）.
Does Strix support Chinese?
Strix has no Chinese interface at this time.
Affiliate Links Notice
📬 Ask More Daily
Price hikes & free-tier cuts — we'll warn you first
This site uses cookies for analytics and ads. You can keep only the cookies required for the site to work, or accept all.
Privacy Policy
