Yes, both Hal9 and Semanticscholar offer a Free Trial.
The starting price of Hal9 begins at $200/month, while pricing details for Semanticscholar are unavailable.
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
Semanticscholar offers several advantages, including Aggregates scientific literature, Covers various science fields, Archives over 211 million papers, Includes Semantic Reader for augmented reading, Improved API for developers and many more functionalities.
The cons of Semanticscholar may include a Limited to scientific literature, No offline access, No language translation options, Requires sign up for alerts. and No mobile application