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aider vs Strix: pricing and free tier side by side

✓ aider Checked 2026-09-21 · Strix Checked 2026-09-12

aider vs Strix

AMO PIMI They also argued about these things on another page.

aider and Strix are both Coding tools. Pricing, free tiers and language support compared below.

aider-ai

Has a free plan

Completely open-source and free (Apache 2.0), with no subscription model; uses local models (such as Ollama) at zero cost; API call fees depend on the chosen LLM provider

Cheapest paid plan: API pay-as-you-go (usage-based)

Chinese support: Partial

Claim Free Allowance →

Strix (Open-source)

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)

Cheapest paid plan: US$59（One-time purchase）

Chinese support: Not supported

View Official Pricing →

Full paid plans compared

aider

PlanPriceWhat you get
API cost (self-selected provider)API pay-as-you-go (usage-based)Aider itself is free, the cost of LLM API is determined by the provider chosen by the user, usually ranging from US$10-30 per month (light usage) to US$50-200+ per month (heavy usage)

Strix

PlanPriceWhat you get
One-time PentestUS$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 AuditUS$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.
EnterpriseOfficial 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, aider has a free plan and Strix does not — start with aider.

Neither publishes paid pricing — check whether the free tier covers your needs.

FAQ

Is there a free version of aider?

Yes. Completely open-source and free (Apache 2.0), with no subscription model; uses local models (such as Ollama) at zero cost; API call fees depend on the chosen LLM provider

How much does aider cost?

The cheapest is the plan from aider named API cost (self-selected provider), at about Official quote (upon inquiry).

Does aider support Chinese?

aider 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.

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