Compare / Claude Haiku 4.5 vs Gemini 3 Flash Preview

Claude Haiku 4.5 vs Gemini 3 Flash Preview

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

Claude Haiku 4.5
Anthropic · profile
Gemini 3 Flash Preview
Google · profile
Results compared
5
Shared sources
2
BenchmarkMetricClaude Haiku 4.5Gemini 3 Flash Preview
UGI LeaderboardreportedRequested-length error% off the requested word count 6.0%16.0%
UGI LeaderboardreportedStyle adherencescore from 0 to 1 0.390.37
UGI LeaderboardreportedWriting scorescore out of 100 52.267.7
Vectara Hallucination LeaderboardreportedAnswer rate% of documents 99.5%99.8%
Vectara Hallucination LeaderboardreportedHallucination rate% of summaries 9.8%13.5%

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.