Claude Sonnet 4.6
Anthropic · released 2026 · proprietary API
- 1M context
- Text + image in
Legacy Sonnet model; Anthropic's own model page calls Sonnet 5 the current Sonnet model and recommends migrating for improved performance.
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 40 models tracked.
Cost to run
#30(tied)
of 40
Input price
#30(tied)
of 40
Context window
#9(tied)
of 40
Compare with
The nearest models by blended cost to run.
Put it to work
Specs from BitByteCore's hand-verified Frontier Ledger (v2026-09-26), this row verified 25 Sep 2026 against Anthropic's official pricing ↗. Model pricing moves fast, so confirm with Anthropic before you rely on a figure.