Side by side pricing and context for Claude 3 Sonnet and Claude Sonnet 5. Rates are curated catalog values with last verified dates on each model page.
Claude 3 Sonnet
Legacy Sonnet tier for migration math versus Sonnet 4.6/5. Keep when usage reports still show Claude 3 Sonnet traffic.
Input $3.00 / Output $15.00 per 1M
Context 200K · Approx (Anthropic family)
Claude Sonnet 5
Balanced Claude for most production apps: strong quality without Opus cost. Check the introductory vs standard rate note and re-run TokenCALC after pricing changes.
Input $2.00 / Output $10.00 per 1M
Context 1M · Approx (Anthropic family)
Quick take
- Claude Sonnet 5 is cheaper on input in this catalog snapshot.
- Claude Sonnet 5 is cheaper on output in this catalog snapshot.
- Both last verified on their model pages (2026-08-02 / 2026-08-02).
Rate table
| Metric | Claude 3 Sonnet | Claude Sonnet 5 |
|---|---|---|
| Input / 1M | $3.00 | $2.00 |
| Output / 1M | $15.00 | $10.00 |
| Cached input / 1M | $0.300 | $0.200 |
| Context | 200K | 1M |
| Tokenizer | Approx (Anthropic family) | Approx (Anthropic family) |