Claude Haiku 4.5
Anthropic · released Oct 2025 · proprietary API
Fastest Claude with near-frontier intelligence at low cost.
Context window
200K
200,000 tokens
Input price
$1
per 1M tokens
Output price
$5
per 1M tokens
Blended
$2
3:1 in:out mix
Weights
Proprietary
API only
Released
Oct 2025
Anthropic
Where it ranks
Of the 16 models tracked, Claude Haiku 4.5 is #7 cheapest to run (blended $/1M at a 3:1 input:output mix), #6 by input price, and #15 (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.