Model comparison · updated 2026-07-28
Side-by-side pricing for1 million tokens
| Claude Opus 4.8 | Claude Sonnet 5 | Verdict | |
|---|---|---|---|
| Provider | Anthropic | Anthropic | -- |
| Context window | 1M | 1M | -- |
| Input / 1M tokens | $5 | $2 | Claude Sonnet 5 is 2.5x cheaper |
| Output / 1M tokens | $25 | $10 | Claude Sonnet 5 is 2.5x cheaper |
| Output:input ratio | 5x | 5x | -- |
| Tier | flagship | balanced | -- |
Claude Sonnet 5: Introductory pricing — list price is $3 / $15 from Sep 1, 2026.
Claude Opus 4.8
2,000,000 tokens
Claude Sonnet 5
5,000,000 tokens
Claude Sonnet 5 gives you 2.5x more input for the same budget.
Claude Opus 4.8
400,000 tokens
Claude Sonnet 5
1,000,000 tokens
Claude Sonnet 5 gives you 2.5x more output for the same budget.