Grok API: send the encrypted reasoning back every turn
On xAI's Responses API, append every output item (including encrypted reasoning) to the next request. Dropping it hurts quality and cache hits.
Grok tips & tricks
Grok API: set reasoning effort explicitly and leave sampling near 0.7/0.95
xAI recommends temperature 0.7 and top_p 0.95, explicit reasoning effort on every request, streaming, and long client timeouts.