Claude Opus 5 versus Gemini 3.8 Flash
Neither strictly dominates the other on this workload.
| Claude Opus 5 | Gemini 3.8 Flash | |
|---|---|---|
| LMArena | 1504.9 | 1494.7 |
| Document | 1516.3 | — |
| Arena | 1504.9 | 1494.7 |
| Effective $/M | $10.00 | $1.50 |
| Context | 1M | 1.0M |
Questions this page answers
Is Claude Opus 5 both better and cheaper than Gemini 3.8 Flash?
Neither strictly dominates the other on this workload.
Does a missing score count as zero?
No. Unrated is not a score of zero. No quality bar is drawn for a missing score.