Anthropic's new Opus scores 7 points higher than Opus 5 on the all-round index and costs 20% less per token.
Compared with Claude Opus 5 · the model it replaces
Completes two in three hard command-line tasks
Terminal-Bench 4.0 — doing real work in a computer terminal
66.4%
▲ up from 52.3% · +14.1 points
Seven points smarter on the all-round score
Artificial Analysis Intelligence Index — average of 10 hard tests
58
▲ up from 51 · +7 points
Costs a fifth less than the model it replaces
Price per 1M tokens — what developers pay, input / output
$4 / $20
▲ down from $5 / $25 · 20% cheaper
Claude Opus 5.5 is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Newest first. See the full line with every card →
One email a week: what AI models shipped, the actual differences vs the previous version, and what's coming next. No filler.