claude-sonnet-4.6

Anthropic · Claude Sonnet

Anthropic's balanced model — near-Opus quality at roughly half the price. Sonnet is the sweet spot for production workloads that need frontier intelligence without frontier cost.

pros

• near-frontier quality at lower cost
• fast for its capability tier
• strong coding and reasoning
• good tool-use and function calling

cons

• not as strong as Opus on hardest tasks
• still pricier than open-source alternatives

use this model on surp.ivc.lol

Reference this model in a custom combo to always get the cheapest price for it:

curl -X POST https://surp.ivc.lol/api/combos/custom \
  -H "Content-Type: application/json" \
  -d '{"name":"my combo","models":["claude-sonnet-4.6"]}'

Or compare it against alternatives: compare claude-sonnet-4.6 »