Compare / Claude Opus 4.5 vs gemini-3-pro-preview
Claude Opus 4.5 vs gemini-3-pro-preview
13 results from 3 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Claude Opus 4.5 | gemini-3-pro-preview |
|---|---|---|---|
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Irrelevance detection% correct | 90.8% | 85.6% |
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Memory% correct | 73.8% | 61.7% |
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Multi-turn tasks% correct | 68.4% | 63.1% |
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Overall accuracy% correct | 77.5% | 72.5% |
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Relevance detection% correct | 68.8% | 75.0% |
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Single-turn calls (curated)% correct | 89.7% | 90.7% |
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Single-turn calls (user-contributed)% correct | 79.8% | 83.1% |
| Berkeley Function Calling Leaderboard (BFCL) V4reported | Web search% correct | 84.5% | 80.0% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 3.0% | 33.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.39 | 0.37 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 70.4 | 66.7 |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 98.7% | 99.4% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 10.9% | 13.6% |
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.