Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Opus 4.5
78
DeepSeek V4 Pro
71
Verified leaderboard positions: Claude Opus 4.5 #9 · DeepSeek V4 Pro #22
Pick Claude Opus 4.5 if you want the stronger benchmark profile. DeepSeek V4 Pro only becomes the better choice if you want the cheaper token bill or you need the larger 1M context window.
Agentic
+3.4 difference
Coding
+7.1 difference
Knowledge
+16.8 difference
Claude Opus 4.5
DeepSeek V4 Pro
$5 / $25
$1.74 / $3.48
46 t/s
N/A
1.01s
N/A
200K
1M
Pick Claude Opus 4.5 if you want the stronger benchmark profile. DeepSeek V4 Pro only becomes the better choice if you want the cheaper token bill or you need the larger 1M context window.
Claude Opus 4.5 is clearly ahead on the provisional aggregate, 78 to 71. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Opus 4.5's sharpest advantage is in knowledge, where it averages 66.2 against 49.4. The single biggest benchmark swing on the page is HLE, 30.8% to 7.7%.
Claude Opus 4.5 is also the more expensive model on tokens at $5.00 input / $25.00 output per 1M tokens, versus $1.74 input / $3.48 output per 1M tokens for DeepSeek V4 Pro. That is roughly 7.2x on output cost alone. DeepSeek V4 Pro gives you the larger context window at 1M, compared with 200K for Claude Opus 4.5.
Claude Opus 4.5 is ahead on BenchLM's provisional leaderboard, 78 to 71. The biggest single separator in this matchup is HLE, where the scores are 30.8% and 7.7%.
Claude Opus 4.5 has the edge for knowledge tasks in this comparison, averaging 66.2 versus 49.4. Inside this category, HLE is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for coding in this comparison, averaging 65.9 versus 58.8. Inside this category, SWE Multilingual is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for agentic tasks in this comparison, averaging 62.5 versus 59.1. Inside this category, MCP Atlas is the benchmark that creates the most daylight between them.
For engineers, researchers, and the plain curious — a weekly brief on new models, ranking shifts, and pricing changes.
Free. No spam. Unsubscribe anytime.