Yes, both Hal9 and Feynman offer a Free Trial.
Pricing for Hal9 Starts at $200/month whereas for Feynman Starts at $24.99/month.
Hal9 offers several advantages, including Multi-language backend support, Seamless existing data connection, Requires no web development knowledge, Provides code assets for fine-tuning, Multiple science and engineering runtimes and many more functionalities.
The cons of Hal9 may include a Minimal APIs, In-development support for certain languages, Requires web developers for optimization, Compliance setup needed for privacy. and Trial version not directly accessible
