# AWS Mantle

AWS Mantle serves 5 text models on LLM API from Anthropic and OpenAI.

Model ID prefix: `aws-mantle/` · 5 models · 2 labs
Updated: 2026-10-19
Canonical: https://llmapi.ai/providers/aws-mantle/

## Models and prices

Prices when AWS Mantle serves the request.

### Text (5)

Prices per 1M tokens.

| Model | Model ID | Input | Output | Cache read | Context |
| --- | --- | --- | --- | --- | --- |
| [Claude Fable 5.1](https://llmapi.ai/models/anthropic-claude-fable-5-1/) | `aws-mantle/claude-fable-5-1` | $10 | $50 | $0.25 | 1M |
| [Claude Opus 5](https://llmapi.ai/models/anthropic-claude-opus-5/) | `aws-mantle/claude-opus-5` | $5 | $25 | $0.5 | 1M |
| [GPT-5.6 Luna](https://llmapi.ai/models/openai-gpt-5-6-luna/) | `aws-mantle/gpt-5.6-luna` | $0.22 | $1.32 | $0.022 | 1.05M |
| [Claude Fable 5](https://llmapi.ai/models/anthropic-claude-fable-5/) | `aws-mantle/claude-fable-5` | $10 | $50 | $1 | 1M |
| [Claude Sonnet 5](https://llmapi.ai/models/anthropic-claude-sonnet-5/) | `aws-mantle/claude-sonnet-5` | $2 | $10 | $0.2 | 1M |

**Volume pricing.** At higher monthly volume, models on AWS Mantle may cost less. Book a call and sales will quote a price for your usage. [Book a call with sales](https://meetings.hubspot.com/julia-andriienko/llmapi) or [Create an account first](https://app.llmapi.ai/signup).

## Send requests to AWS Mantle

Put `aws-mantle/` before a model ID and the request goes to AWS Mantle. If AWS Mantle’s uptime over the last 5 minutes is below 90%, it goes to another provider of the model, unless it sends `X-No-Fallback: true`. [Routing docs](https://docs.llmapi.ai/features/routing)

Example: Claude Fable 5.1, Anthropic Messages (`POST /v1/messages`). Set LLMAPI_KEY to your LLM API key.

```python
import os

import anthropic

client = anthropic.Anthropic(
    base_url="https://api.llmapi.ai",
    api_key=os.environ["LLMAPI_KEY"],
)

message = client.messages.create(
    model="aws-mantle/claude-fable-5-1",
    max_tokens=16000,
    messages=[{"role": "user", "content": "Hello"}],
)
for block in message.content:
    if block.type == "text":
        print(block.text)
```

Prices synced 2026-10-27.

Next step: [Get API key](https://app.llmapi.ai/signup)