Claude Haiku 5.5 costs up to 90% less. Here is who should switch.

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Anthropic just released a cheaper, faster Claude model, and the price drop is big enough to matter. If you use Claude through a chat subscription, this is mostly background news. If you pay for automations that run on Claude, such as lead sorting, invoice reading or email triage, the cost of every run just went down, and some of your workflows are worth a second look.

The short answer

Move your simple, repetitive tasks to Haiku 5.5. Do not move everything. Keep Sonnet 5.5 as the everyday default and Opus 5.5 for the work where judgment is the actual job. Most teams will end up using all three, each on the steps it fits.

What "up to 90% cheaper" means in plain terms

Claude charges by tokens, which are the small chunks of text it reads and writes. A token is about three-quarters of a word, and a million tokens is several novels' worth of text. You pay one rate for what Claude reads (input) and a higher rate for what it writes (output). Per Anthropic's Haiku page, here is the new pricing for requests up to about 100,000 tokens:

• Haiku 5.5: $0.10 to read a million tokens, $0.50 to write a million.
• The previous Haiku (4.5): $1 to read, $5 to write.
• Sonnet 5.5, for comparison: $2 to read, $10 to write, per our Sonnet vs Opus guide.

Work that does not need an instant answer, like an overnight batch of records, gets another 50% off through batch processing.

Why your savings may be closer to 75%

The 90% cut applies to requests up to about 100,000 tokens, which is roughly a short book. Longer requests cost $0.50 to read and $2.50 to write, a 50% cut instead of 90%. There is a second wrinkle: according to Developers Digest, Haiku 5.5 counts text in a way that produces about 30% more tokens for the same words, so a long document that sat just under the line before can now sit just over it.

Everyday tasks like emails, call notes and invoices fit well under the line, and Anthropic says 90% of requests to the old Haiku were already under it. Anthropic's own estimate, as reported there, is that real workloads come out about 75% cheaper. That is still a large saving, and it is the number we would plan around.

Which work to hand to Haiku 5.5

The sweet spot is high-volume work with a clear right answer:

• Sorting: routing inbound emails, tagging leads, labeling support requests.
• Pulling out details: reading invoices, contracts or forms and filling in the fields in your CRM or spreadsheet.
• First-pass summaries: call notes and long email threads that a person or a stronger model reviews next.
• Reading for a bigger model: a cheap Haiku step condenses the material, then Sonnet or Opus makes the call.

Which work to keep on Sonnet or Opus

Keep the stronger models for contract review, research where the right answer is not obvious, multi-step work across several systems, and anything where a wrong call costs you a client. Sonnet 5.5 scores higher than Haiku 5.5 on every benchmark Anthropic published, and Anthropic itself says Sonnet and Opus remain the better choice for complex coding and agent work. Our Sonnet vs Opus guide covers how to split work between those two.

How good is it, really?

Better than the old Haiku by a wide margin. In Anthropic's own tests, reported by DataCamp, Haiku 5.5 completed 72.4% of computer-use tasks (the kind where Claude clicks through software like a person) versus 15.7% for the old Haiku. Those are the vendor's numbers, not an independent test.

DataCamp also ran a small real-world check: 24 invoices, each needing a decision to pay, hold or return. Both Haiku models got all 24 right. Haiku 5.5 cost about one cent. The old Haiku cost 25 cents, partly because it spent a lot of effort thinking. It is one small test, but it matches what we would expect for this kind of job.

How to try it without risk

1. Pick one repetitive workflow with a clear right answer, like tagging inbound leads.
2. Run 25 to 50 real examples through both your current model and Haiku 5.5.
3. Compare how many each got right, and what each run cost.
4. Switch only if accuracy holds. Leave the harder steps where they are.

If your automations are built on the Claude API, the model name has to be updated and a few settings from the old Haiku no longer work, which is why the test comes first. If you only use Claude through its apps, there is nothing to change.

What this means for your Claude costs

The model is one line in the total cost of putting Claude to work. Setup, workflow design, integrations and ongoing management are separate, and usually larger. We break that down in how much Claude implementation costs. A cheaper model helps most where volume is high and the work is routine. If you want to see where your team sits, our free AI value assessment is a good place to start.

Frequently asked questions

What is Claude Haiku 5.5?

Claude Haiku 5.5 is Anthropic's smallest, fastest and lowest-cost Claude model, released on October 7, 2026. It is built for high-volume, clearly defined work such as sorting emails, tagging leads and pulling details out of invoices, not for complex judgment calls.

How much does Claude Haiku 5.5 cost?

For typical requests, Claude Haiku 5.5 costs $0.10 per million input tokens and $0.50 per million output tokens, down from $1 and $5 on the previous Haiku. Very long requests, over about 100,000 tokens, cost $0.50 and $2.50. Batch processing takes another 50% off.

Is Claude Haiku 5.5 better than Sonnet 5.5?

No. Sonnet 5.5 scores higher than Haiku 5.5 on every benchmark Anthropic published. Haiku 5.5 is the budget pick for simple, repeatable tasks. Sonnet 5.5 is the everyday default, and Opus 5.5 is for work that needs sustained judgment.

Will Claude Haiku 5.5 lower my Claude bill?

It can, if you pay for automations that run on Claude and some of their steps are simple and repetitive. Expect savings closer to 75% than 90% once longer requests are counted. If you only use Claude through its apps on a subscription, your bill does not change.

Do I need to change anything to use Claude Haiku 5.5?

If you only use Claude through its apps, no. If your automations are built on the Claude API, the model name has to be updated, and a few settings that worked on the old Haiku no longer do, so test first. TEG can review which steps are worth moving.