Anthropic cuts small-model prices with Claude Haiku 5.5

Anthropic says Claude Haiku 5.5, released on 7 October, costs around 75% less to run on average than Haiku 4.5, with input at $0.10 per million tokens up to 100,000.

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Check our sources · 12 facts from 2 sources

The title Claude Haiku 5.5 set in dark serif type across a cream field, with yellow, beige and blue panels behind it — Anthropic's launch artwork for Claude Haiku 5.5. source · The company's own image of its product, used to report on it

Key points

For prompts up to 100,000 tokens Anthropic lists $0.10 per million input tokens and $0.50 for output, against $1.00 and $5.00 for Haiku 4.5.
Anthropic's documentation says the same text counts as approximately 30% more tokens than on Haiku 4.5, so token budgets tuned for the older model may need recounting.
On Anthropic's own table Haiku 5.5 scores 72.4% on the offline subset of OSWorld 2.1, against 15.7% for Haiku 4.5 and 83.9% for Sonnet 5.5.

What happened

Anthropic released Claude Haiku 5.5 on 7 October 2026, with the model ID claude-haiku-5-5. Anthropic calls it the cheapest, fastest and most capable small model it has released, and says it is the first Haiku-class model with an adjustable effort setting.

For prompts up to 100,000 tokens Anthropic lists $0.10 per million input tokens and $0.50 per million output tokens, against $1.00 and $5.00 for Haiku 4.5. For prompts over 100,000 tokens the price is $0.50 input and $2.50 output. Cache reads are $0.01 per million tokens up to 100,000 tokens and $0.05 above that.

Anthropic says the model costs around 75% less to run on average than Haiku 4.5, and that the cut is 90% for requests up to 100,000 tokens and 50% for longer ones.

Anthropic's documentation gives a 1M-token context window and up to 128k output tokens. The same text counts as about 30% more tokens than on Haiku 4.5, so token budgets tuned for the older model need recounting. Anthropic says the model is available on the Claude Platform, Amazon Web Services, Google Cloud and Microsoft Azure.

On Anthropic's own table, Haiku 5.5 scores 72.4% on the offline subset of OSWorld 2.1, against 15.7% for Haiku 4.5, 48.9% for GPT-6 Luna and 83.9% for Sonnet 5.5. These are Anthropic's figures, not an outside test.

What it means for you

Our view

The price cut is large, but the 75% average and the 90% figure for short prompts are Anthropic's own. The 30% higher token count for the same text bears on the 90% per-token price cut, and the page does not state whether the 75% already counts it.

Prompts over 100,000 tokens cost $0.50 for input and $2.50 for output, and Anthropic puts the cut there at 50%, so long inputs save less. The gap to Sonnet 5.5 on OSWorld 2.1 is wide, so a small model fits simple, high-volume steps.

If you run Haiku 4.5, rerun a sample of your real prompts, compare the cost at the new token count, and check quality against your current results before switching.

It adds no new facts.

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Check our sources

Every sentence above is checked against these 2 sources.

1 Introducing Claude Haiku 5.5Anthropic · 7 Oct 2026 · 10 facts

Open the source archived copy

Anthropic published Introducing Claude Haiku 5.5 dated October 7, 2026, with the model ID claude-haiku-5-5. Quote: "October 7, 2026"

October 7, 2026
cite
Anthropic describes Claude Haiku 5.5 as the cheapest, fastest and most capable small model it has released. Quote: "Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model"

Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released.
cite
Anthropic says Haiku 5.5 is its first Haiku-class model with an adjustable effort setting. Quote: "Haiku 5.5 is our first Haiku-class model to come with an adjustable effort setting."

Haiku 5.5 is our first Haiku-class model to come with an adjustable effort setting.
cite
For prompts up to 100,000 tokens the page lists Haiku 5.5 input at $0.10 per million tokens against $1.00 for Haiku 4.5; over 100,000 tokens it lists $0.50. Quote: "Input tokens $0.10 / $0.50 $1.00 $2.00"

Input tokens $0.10 / $0.50 $1.00 $2.00
cite
For prompts up to 100,000 tokens the page lists Haiku 5.5 output at $0.50 per million tokens against $5.00 for Haiku 4.5; over 100,000 tokens it lists $2.50. Quote: "Output tokens $0.50 / $2.50 $5.00 $10.00"

Output tokens $0.50 / $2.50 $5.00 $10.00
cite
The page lists Haiku 5.5 cache reads at $0.01 per million tokens for prompts up to 100,000 tokens and $0.05 above that. Quote: "Cache reads $0.01 / $0.05 $0.10 $0.10"

Cache reads $0.01 / $0.05 $0.10 $0.10
cite
Anthropic says Haiku 5.5 now costs around 75% less to run on average than Haiku 4.5. Quote: "On average, it now costs around 75% less to run."

Haiku 5.5 is available at a much lower price than Haiku 4.5. On average, it now costs around 75% less to run.
cite
Anthropic says Haiku 5.5 is priced 90% lower than Haiku 4.5 for requests up to 100,000 tokens and 50% lower for requests over 100,000 tokens. Quote: "Claude Haiku 5.5 is priced 90% lower than Claude Haiku 4.5 for requests up to 100,000 tokens, and 50% lower for requests over 100,000 tokens."

Claude Haiku 5.5 is priced 90% lower than Claude Haiku 4.5 for requests up to 100,000 tokens, and 50% lower for requests over 100,000 tokens.
cite
Anthropic says Haiku 5.5 is available on Amazon Web Services, Google Cloud and Microsoft Azure, and on the Claude Platform as claude-haiku-5-5. Quote: "Claude Haiku 5.5 is available now on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure."

Claude Haiku 5.5 is available now on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure. On the Claude Platform, developers can get started with claude-haiku-5-5 .
cite
On Anthropic's benchmark table Haiku 5.5 scores 72.4% on OSWorld 2.1 (offline subset), Haiku 4.5 15.7%, GPT-6 Luna 48.9% and Sonnet 5.5 83.9%. Quote: "72.4% Offline subset 15.7% Offline subset 48.9% Offline subset 83.9% Offline subset"

Computer use OSWorld 2.1 72.4% Offline subset 15.7% Offline subset 48.9% Offline subset 83.9% Offline subset
cite

2 Claude Haiku 5.5 overviewAnthropic · 2 facts

Open the source archived copy

Anthropic documentation gives Haiku 5.5 a 1M token context window and up to 128k output tokens. Quote: "a 1M token context window, and up to 128k output tokens"

It supports adaptive thinking with the effort parameter, a 1M token context window, and up to 128k output tokens.
cite
The documentation says the same text counts as approximately 30% more tokens on Haiku 5.5 than on Haiku 4.5. Quote: "the same text counts as approximately 30% more tokens than on Claude Haiku 4.5"

It uses the same newer tokenizer as Claude 4.7 and later models, so the same text counts as approximately 30% more tokens than on Claude Haiku 4.5.
cite

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