Claude Opus 5 Pricing 2026: Complete Cost Guide & Comparison

Claude Opus 5 at a glance: $5 per million input tokens, $25 per million output tokens on the Claude API, identical pricing to its predecessor Opus 4.8. Fast mode (2.5x default speed) runs $10/$50 per million tokens. Anthropic says Opus 5 approaches Fable 5’s frontier performance at half Fable’s per-token price ($10/$25 vs Fable’s $10/$50).