sonnet 3.5 is ancient though.

my recommendation is setting it up yourself;

• install vscode
• install continue plugin
• create anthropic developer account and fund an api key
• add claude 4 sonnet to the continue config
• create voyage.ai account and fund api key (for indexing your codebase)
• add voyage.ai api key to continue config for superb code embeddings generation

admittedly haven't tried github myself, but this way you retain full control. Bonus is no monthly subscription fee -- you only pay for what you actually use