Compare / ai21-jamba-mini-1.7 vs GPT-5.5

ai21-jamba-mini-1.7 vs GPT-5.5

5 results from 2 sources that measured both models. Each row is in the source's own units; there is no overall winner.

ai21-jamba-mini-1.7: AI21 Labs · profile
GPT-5.5: OpenAI · profile
Results compared: 5
Shared sources: 2

Benchmark	Metric	ai21-jamba-mini-1.7	GPT-5.5
UGI Leaderboardreported	Requested-length error% off the requested word count	36.0%	13.0%
UGI Leaderboardreported	Style adherencescore from 0 to 1	0.36	0.41
UGI Leaderboardreported	Writing scorescore out of 100	23.8	69.7
Vectara Hallucination Leaderboardreported	Answer rate% of documents	99.1%	100.0%
Vectara Hallucination Leaderboardreported	Hallucination rate% of summaries	14.7%	9.3%

Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.