Chat Completions

Parameter	What does this do?	Telnyx	OpenAI
messages	Provides chat context	✅	✅
model	Adjusts speed + quality	✅	✅
stream	Streams response	✅	✅
max_tokens	Limits output length	✅	✅
temperature	Adjusts predictability	✅	✅
top_p	Adjusts variety	✅	✅
frequency_penalty	Decreases repetition	✅	✅
presence_penalty	Decreases repetition...	✅	✅
n	Returns n responses	✅	✅
stop	Forces model to stop	✅	✅
logit_bias	Tweaks odds of results	✅	✅
logprobs	Returns odds of outputs	✅	✅
-> top_logprobs	-> For how many candidates?	✅	✅
seed	Reduces randomness	✅	✅
response_format	Ensures syntax (e.g. JSON)	✅	✅
guided_json	Ensures output conforms to schema	✅	❌
guided_regex	Ensures output conforms to regex	✅	❌
guided_choice	Ensures output conforms to multiple choice	✅	❌
min_p	top_p alternative	✅	❌
use_beam_search	Explores more options	✅	❌
-> best_of	-> How many options?	✅	❌
-> length_penalty	-> Are long options bad?	✅	❌
-> early_stopping	-> How hard should it try?	✅	❌
tools	Helps model respond	✅	✅
-> functions	-> Outputs JSON for your code	🔜	✅
-> retrieval	-> Uses your docs (e.g. PDFs)	✅	❌
tool_choice	How does model choose?	🔜	✅
user	Tracks users	❌	✅

Transcriptions (BETA)

Parameter	What does this do?	Telnyx	OpenAI
file	Provides audio data	✅	✅
model	Adjusts speed + quality	✅	✅
response_format	Adjusts output format	✅	✅
timestamp_granularities[]	Adds timestamps	✅	✅
-> segment	-> per audio segment	✅	✅
-> word	-> per word	❌	✅
language	Improves accuracy	❌	✅
prompt	Guides style	❌	✅
temperature	Adjusts "creativity"	❌	✅