Claude Opus 5 vs Ember-1

Claude Opus 5 against Ember-1
Claude Opus 5Ember-1
Coding index83.052.6
Benchmarks behind it Verified, 6 benchmarks Partial, 2 benchmarks
Output $/Mtok$25.00$15.00
Cost per solved task$1.33Not computable
Context window1M1.05M