---
title: "Claude Haiku 5.5 — API access"
description: "Claude Haiku 5.5 API pricing: official $0.10/$0.50 per 1M tokens up to 100K prompt tokens, $0.05/$0.25 with the flat 50% apiToken.sale discount. 1M context, 128K output."
url: "https://apitoken.sale/models/claude-haiku-5-5"
language: "en"
---
# Claude Haiku 5.5

Claude Haiku 5.5 is Anthropic's October 2026 Haiku and the cheapest, fastest Claude model, with a 1M context window, adaptive thinking and effort control.

- **Model ID:** `claude-haiku-5-5`
- **Tier:** Haiku
- **Context window:** 1M tokens
- **Max output:** 128K tokens
- **Official price (per 1M):** $0.1 input / $0.5 output
- **Your price (per 1M):** input $0.05, output $0.25 (flat 50% off)
- **Base URL:** `https://router.apitoken.sale` · **Endpoint:** `POST /v1/messages`

## Best for

- Classification, extraction, routing and subagent calls at very high volume.
- Latency-sensitive chat and tool loops that need adaptive thinking.
- Cheap pre-processing before an Opus or Sonnet call.

## Notes

- Official rates per 1M tokens for prompts up to 100K tokens: $0.10 input, $0.01 cache read, $0.125 5-minute cache write, $0.20 1-hour cache write, $0.50 output.
- Above 100K prompt tokens (input plus cache reads and writes), the whole request uses $0.50 input, $0.05 cache read, $0.625 / $1 cache writes and $2.50 output per 1M.
- Adaptive thinking is on by default; effort low through max is supported, and thinking type "disabled" works at high effort or below. Manual budget_tokens and a non-default temperature or top_p return 400.

## Call it

```bash
curl https://router.apitoken.sale/v1/messages \
  -H "x-api-key: $APITOKEN_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{"model": "claude-haiku-5-5", "max_tokens": 1024, "messages": [{"role": "user", "content": "Hello"}]}'
```

## FAQ

**How much does the Claude Haiku 5.5 API cost?**

Officially $0.10 per 1M input and $0.50 per 1M output tokens for prompts up to 100K tokens, and $0.50/$2.50 for the whole request above that. apiToken.sale applies the flat 50% discount: $0.05/$0.25 (or $0.25/$1.25 for long prompts).

**What is the model ID for Claude Haiku 5.5?**

claude-haiku-5-5. Use it unchanged with the Anthropic SDK, Claude Code, Cursor, Cline or any compatible tool pointed at https://router.apitoken.sale.

**Haiku 5.5 or Haiku 4.5?**

Haiku 5.5 is newer, ten times cheaper per token for prompts up to 100K tokens, and has a 1M context window. Code written for Haiku 4.5 must drop budget_tokens thinking and non-default sampling parameters, and read content blocks by type, because responses can begin with thinking.

---
API reference: https://apitoken.sale/md/docs · All models: https://apitoken.sale/md/models