Compare / Claude Sonnet 4.5 vs DeepSeek V3.1 Terminus
Claude Sonnet 4.5 vs DeepSeek V3.1 Terminus
20 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 Sonnet 4.5 | DeepSeek V3.1 Terminus |
|---|---|---|---|
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,461 | 1,423 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,454 | 1,405 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,464 | 1,420 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,457 | 1,417 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,454 | 1,411 |
| Artificial Analysisreported | Artificial Analysis Coding Indexindex score | 52.1 | 43.5 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 20.7 | 14.8 |
| Artificial Analysisreported | GPQA Diamond% of questions | 83.4% | 79.2% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 17.8% | 16.4% |
| Artificial Analysisreported | IFBench% of instructions | 57.3% | 57.0% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 72.3% | 69.3% |
| Artificial Analysisreported | SciCode% of problems | 45.7% | 38.0% |
| Artificial Analysisreported | Terminal-Bench 2.1% of tasks | 55.8% | 44.9% |
| Artificial Analysisreported | Terminal-Bench 4.0% of tasks | 0.0% | 0.0% |
| Artificial Analysisreported | Terminal-Bench Hard% of tasks | 35.6% | 31.8% |
| Artificial Analysisreported | Τ-bench banking% of tasks | 24.5% | 21.0% |
| Artificial Analysisreported | Τ²-bench telecom% of tasks | 78.1% | 37.1% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 5.0% | 32.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.41 | 0.37 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 66.9 | 54.0 |
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.