Claude Sonnet 4.6
Anthropic · Released Feb 2026
Anthropic's best balance of speed and intelligence. 1M context window. Sonnet pricing has held flat at $3/$15 across all 4.x releases.
- Strengths
- The best speed-to-intelligence balance in the line, with a 1M-token context.
- Best for
- Production apps, coding assistants and agents that need quality without Opus prices.
- Limitations
- Not as deep as Opus on the very hardest reasoning tasks.
Input / 1M
$3.00
Output / 1M
$15.00
Cached input / 1M
$0.3
Context window
1M
Price history
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 17 Feb 2026 | $3.00 | $15.00 | $0.3 | anthropic.com/pricing |