AIThe Registerabout 4 hours ago
Anthropic debuts Opus 5 at half the price
3 min read
Anthropic released Opus 5 at half the token cost of its Fable sibling: $5/$25 per MTok versus $10/$50. The model leads the Artificial Analysis Intelligence Index at 61, one point ahead of Fable. Anthropic removed 80 percent of the Claude Code system prompt and eliminated data retention requirements.
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