Last refreshed 2026-06-09. Next refresh: weekly.
Why use Claude Fable 5 on AWS Bedrock?
AWS Bedrock offers Claude Fable 5 with pay-as-you-go pricing at $10.00/1M input tokens. AWS Bedrock is Amazon's fully managed foundation-model service, providing unified API access to top models from Anthropic, Meta, Mistral, and other leading AI labs with built-in tools for RAG, fine-tuning, and AI agent development.
Compare Claude Fable 5 across 4 providers to find the best fit for your use caseSetup recipe
Python + curlpip install boto3export AWS_ACCESS_KEY_ID=...import boto3
client = boto3.client("bedrock-runtime", region_name="us-east-1")
response = client.converse(
modelId="anthropic.claude-fable-5",anthropic.claude-fable-5Request example
import boto3
# Reads AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_DEFAULT_REGION from env
client = boto3.client("bedrock-runtime", region_name="us-east-1")
response = client.converse(
modelId="anthropic.claude-fable-5",
messages=[{
"role": "user",
"content": [{"text": "Hello"}]
}]
)
print(response["output"]["message"]["content"][0]["text"])Gotchas
- Use provider model ID "anthropic.claude-fable-5", not the LLMReference slug "claude-fable-5".
- Use Amazon Bedrock model IDs, e.g. "anthropic.claude-3-opus-20240229-v1:0" for on-demand, or cross-region inference profile IDs like "us.anthropic.claude-opus-4-7-20251101-v1:0". These differ from the public model slug.
- The endpoint template includes a region segment; set the same region in your SDK/client configuration.
- The examples expect AWS_ACCESS_KEY_ID; rename it only if your application config maps the new variable.
Compare Claude Fable 5 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Anthropic | $10.00 | $50.00 |
| AWS Bedrock | $10.00 | $50.00 |
| GCP Vertex AI | $10.00 | $50.00 |
| Microsoft Foundry | $10.00 | $50.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $10.00 |
| Output tokens | $50.00 |
Capabilities
About Claude Fable 5
Anthropic's most capable widely released model, built for demanding reasoning and long-horizon agentic work. Claude Fable 5 is the generally available Mythos-class Claude model, supports vision, tool use, structured outputs, prompt caching, Batch API processing, adaptive thinking that is always on, a 1M-token context window, and up to 128k output tokens. It is available through the Claude API, AWS Bedrock, Vertex AI, and Microsoft Foundry as of June 9, 2026, with first-party pricing at $10 per 1M input tokens and $50 per 1M output tokens.
FAQ
What does Claude Fable 5 cost on AWS Bedrock?
On AWS Bedrock, Claude Fable 5 costs $10 per 1M input tokens and $50 per 1M output tokens.
What is the context window for Claude Fable 5 on AWS Bedrock?
Claude Fable 5 supports a 1m token context window on AWS Bedrock.
How does AWS Bedrock compare to other Claude Fable 5 providers?
Claude Fable 5 is available from 4 providers. The cheapest input pricing is $10.00/1M tokens from Anthropic.
What API model ID do I use for Claude Fable 5 on AWS Bedrock?
Use the model ID anthropic.claude-fable-5 when calling AWS Bedrock's API.
Who created Claude Fable 5?
Claude Fable 5 was created by Anthropic as part of the Claude Fable model family.
Is Claude Fable 5 open source?
Claude Fable 5 is not open source; the seed data lists it as proprietary.