Compare
Claude Opus 4.8 vs Claude Opus 5
These two carry identical list pricing, so no workload shape separates them on cost. Everything below is the same number twice — the decision here is a capability question, not a billing one.
Per million tokens
Claude Opus 4.8
Claude Opus 5
Input$5.00$5.00
Output$25.00$25.00
Cached input$0.50$0.50
Context1M1M
Max output128K128K
ProviderAnthropicAnthropic
Monthly cost by workload
Chat assistant
60,000 requests · 1,200 in / 400 out · 30% cached — short prompts, short answers, high volume
Claude Opus 4.8
$862.80
Claude Opus 5
$862.80
RAG over documents
20,000 requests · 18,000 in / 700 out · 75% cached — large retrieved context, heavily cached prefix
Claude Opus 4.8
$935.00
Claude Opus 5
$935.00
Coding agent
4,000 requests · 45,000 in / 6,000 out · 80% cached — long tool-calling loops, big cached prefix
Claude Opus 4.8
$852.00
Claude Opus 5
$852.00