Claude Haiku 5.5

claude-haiku-5-5

ClaudeChatby Anthropic

Anthropic's fastest model for high-volume, latency-sensitive tasks such as classification, extraction, and routing.

Context
1Mtokens
Max output
128Ktokens
Latency
~8ms
Released
2026-10

Pricing

$ / 1M tokens
Input
$0.10/M
Output
$0.50/M
Cache Read
$0.01/M
Write (5m)
$0.125/M
Write (1h)
$0.20/M

Capabilities

7 listed
  • Chat
  • Tool Use
  • Reasoning
  • Vision
  • Coding
  • Analysis
  • Long Context

Code examples

POST /v1/chat/completions
python
from openai import OpenAI

client = OpenAI(
    api_key="your_api_key",
    base_url="https://api.modelstack.cc/v1",
)

response = client.chat.completions.create(
    model="claude-haiku-5-5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

Frequently asked questions

How is Claude Haiku 5.5 billed on ModelStack?expand_more
ModelStack bills based on actual request usage. Input, output, cache, and any other applicable rates follow the live pricing table on this page. Final request costs are available in the console.
What are the context window and maximum output for Claude Haiku 5.5?expand_more
Claude Haiku 5.5 has a 1M context window and supports up to 128K of output.
How can I call Claude Haiku 5.5 through ModelStack?expand_more
Use the model ID `claude-haiku-5-5` with any OpenAI-compatible SDK pointed at the ModelStack API — see the code examples above for Python, Node.js, and cURL.
Which capabilities does Claude Haiku 5.5 support?expand_more
Claude Haiku 5.5 supports: Chat, Tool Use, Reasoning, Vision, Coding, Analysis, Long Context.

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