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.
API & Developers tips
OpenAI API: tune reasoning effort and verbosity separately
reasoning_effort controls how hard the model thinks; verbosity controls how long the answer is. Adjust them instead of rewriting prompts.
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.
Treat production prompts like application code
OpenAI recommends versioning prompts in your repo, using typed variables, reviewing them in PRs and running evals on every change.