Claude Sonnet 4.6
Anthropic · released 2026 · proprietary API
Best balance of speed and intelligence; strong agentic + coding workhorse.
Context window
1M
1,000,000 tokens
Input price
$3
per 1M tokens
Output price
$15
per 1M tokens
Blended
$6
3:1 in:out mix
Weights
Proprietary
API only
Released
2026
Anthropic
Long-context / tier pricing — Long-context surcharge above 200K input. Listed prices are the base rate for prompts up to ~200K tokens.
Where it ranks
Of the 16 models tracked, Claude Sonnet 4.6 is #13 cheapest to run (blended $/1M at a 3:1 input:output mix), #13 by input price, and #2 (tied) by context window.
See the full Frontier Index →Compare with
The nearest models by blended cost to run.
Put it to work
Specs from BitByteCore's hand-verified Frontier Ledger (v2026-07-04, verified 21 Jun 2026). Model pricing moves fast — confirm with Anthropic before you rely on a figure.