Claude Haiku 5.5
Claude Haiku 5.5 is a language model from Anthropic. It is currently free at 1 provider with up to 1M tokens of context. The model understands images, is suited to coding, supports tool calling.
- Developer
- Anthropic
- Context
- 1M tokens
- Type
- Text
- License
- Proprietary
- Free since
- October 15, 2026
Where to use Claude Haiku 5.5 for free
Each row is a separate free endpoint with its own limits.
Quick start
curl https://api.unorouter.com/v1/chat/completions \
-H "Authorization: Bearer $UNOROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-haiku-5-5:free",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(
base_url="https://api.unorouter.com/v1",
api_key="YOUR_UNOROUTER_API_KEY",
)
reply = client.chat.completions.create(
model="claude-haiku-5-5:free",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.unorouter.com/v1",
apiKey: process.env.UNOROUTER_API_KEY,
});
const reply = await client.chat.completions.create({
model: "claude-haiku-5-5:free",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(reply.choices[0].message.content);Example for UnoRouter. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.
Benchmarks
Source: Artificial Analysis · Claude Haiku 5.5 (Max)
Similar free models
FAQ
Is Claude Haiku 5.5 free?
Yes. As of October 15, 2026, Claude Haiku 5.5 is free at UnoRouter. Each provider has its own limits — see the table above.
What is the context window of Claude Haiku 5.5?
The largest context among free routes is 1,000,000 tokens. Some providers cap it lower.
How do I call Claude Haiku 5.5 via API?
Use any OpenAI-compatible client with base URL https://api.unorouter.com/v1, model ID claude-haiku-5-5:free, and a UnoRouter key.
How good is Claude Haiku 5.5?
Artificial Analysis Intelligence Index: 43.4. For comparison, the strongest free model in the catalog right now is GLM 5.3.
Is Claude Haiku 5.5 open-weight?
No, it is proprietary: access is only through provider APIs.