Claude Haiku 4.5
Model details
- Model
claude-haiku-4-5- Provider
radius- API
pi-messages- Base URL
https://radius.pi.dev/v1- Input
- text, image
- Reasoning
- Yes
- Context window
- 200,000
- Max tokens
- 64,000
Show configuration
{
"providers": {
"radius": {
"apiKey": "YOUR_API_KEY",
"models": [
{
"id": "claude-haiku-4-5",
"name": "Claude Haiku 4.5",
"reasoning": true,
"input": [
"text",
"image"
],
"contextWindow": 200000,
"maxTokens": 64000,
"cost": {
"input": 1,
"output": 5,
"cacheRead": 0.1,
"cacheWrite": 1.25
}
}
],
"api": "pi-messages",
"baseUrl": "https://radius.pi.dev/v1"
}
}
}Pricing
USD per million tokens. A tier is selected from the total input tokens in each request and applies to that entire request.
| Request input | Input | Output | Cache read | Cache write |
|---|---|---|---|---|
| All requests | $1 | $5 | $0.1 | $1.25 |
Session cost calculator
Estimate the requests made during an agent session. A user turn can make several model calls while using tools, so costs are calculated per model request.
Estimated session$0.00
- Uncached input
- —
- Cache reads
- —
- Uncached prefixes
- —
- Cache writes
- —
- Output
- —
- Without caching
- —
The first request starts cold unless marked otherwise. Output is billed separately from context growth because reasoning tokens are not always retained. This remains a directional estimate: providers differ in eligibility, rounding, and retention.
Compatibility flags
This API has no model compatibility flags.