Signal AI 13 Oct, 16:57

Claude Haiku 5.5 launches at $0.10 per million input tokens

Anthropic released Claude Haiku 5.5 on October 7, 2026 at $0.10 input and $0.50 output per million tokens, about 75% below Haiku 4.5. What to test.

By Woodander Media Published Oct 13, 2026, 16:57 · 1 min read

Anthropic released Claude Haiku 5.5 on October 7, 2026. For prompts up to 100k tokens it costs $0.10 per million input tokens and $0.50 per million output tokens. Anthropic says that is about 75% less on average than Haiku 4.5.

What changed

Prompts over 100k tokens are priced at $0.50 input and $2.50 output per million tokens.
Cache reads cost $0.01 per million tokens for prompts up to 100k. Haiku 4.5 listed $1.00 input, $5.00 output and $0.10 cache reads.
It is the first Haiku-class model with an adjustable effort setting.
Anthropic's page reports 72.4% on OSWorld 2.1 (offline subset) against 15.7% for Haiku 4.5, and 39.2% on Terminal-Bench 4.0 against 0.0%.
It is available on the Claude Platform as claude-haiku-5-5, and on Amazon Web Services, Google Cloud and Microsoft Azure.
An updated tokenizer means it uses slightly more tokens per task.

Why it matters

Cheap, fast models decide whether an AI feature has a sane margin. Summaries, classification and support replies run in volume, and a 75% price drop changes which of them are worth shipping. The tokenizer note matters too: the real saving on your workload will be a bit smaller than the list-price gap.

What to do now

Replay a week of your own traffic through claude-haiku-5-5 and compare cost per finished task, not cost per token.
Try the lower effort settings on high-volume jobs first.

Related reading sits on the AI Apps & Assistants hub.

Sources

Woodander Media — The Woodander Media editorial team All AI news →