Documentation Index
Fetch the complete documentation index at: https://docs.usehasp.com/llms.txt
Use this file to discover all available pages before exploring further.
The Hasp AI API provides access to three model tiers. Each is a direct Anthropic model, routed through the Hasp compliance substrate.
Available models
| Model identifier | Anthropic model | Characteristics |
|---|
claude-haiku-4-5 | claude-haiku-4-5-20251001 | Fastest, lowest cost. Best for high-volume tasks, simple classification, short generations. |
claude-sonnet-4-6 | claude-sonnet-4-6 | Balanced speed and capability. Default recommendation for most production workloads. |
claude-opus-4-6 | claude-opus-4-5 | Highest capability. Requires explicit opt-in. Best for complex reasoning, long-context synthesis, high-stakes decisions. |
{
"model": "claude-sonnet-4-6",
"messages": [{ "role": "user", "content": "..." }]
}
Opus opt-in
Access to claude-opus-4-6 requires explicit enablement on your organization. Requests to Opus without enablement fail with:
{
"error": {
"code": "OPUS_NOT_ENABLED",
"message": "Opus access requires explicit enablement. Enable it in Settings → AI Workspace → Models."
}
}
ai:chat scope can use Opus.
Cost comparison
Credit consumption scales with model capability. As a rough guide:
- Haiku is ~5x cheaper than Sonnet per token.
- Sonnet is ~5x cheaper than Opus per token.
See Budget Controls for exact credit rates.
For most regulated-industry workloads — clinical documentation assistance, compliance summarization, patient communication drafts — Sonnet delivers the best capability/cost tradeoff. Use Haiku for preprocessing, classification, and routing. Reserve Opus for final reasoning steps where accuracy is the primary constraint.
Deprecation policy
Model versions are deprecated with 6 months advance notice and a 12-month overlap period during which both the old and new versions are available. The model identifier you pass in the request always resolves to a specific model version — Hasp does not silently upgrade you to a newer version without your opt-in.
When a model version is retired, requests using the retired identifier return:
{
"error": {
"code": "MODEL_RETIRED",
"message": "Model claude-X-Y-retired was retired on 2026-MM-DD. Migrate to claude-X-latest."
}
}
