Last refreshed 2026-11-09. Next refresh: weekly.
Why use Claude Fable 5.2 on Anthropic?
Anthropic offers Claude Fable 5.2 with pay-as-you-go pricing at $8.00/1M input tokens. Anthropic is a safety-focused AI research company and creator of the Claude model family, offering API access through the Anthropic Console for text generation, analysis, and coding tasks.
Compare Claude Fable 5.2 across 5 providers to find the best fit for your use caseSetup recipe
Python + curlpip install anthropicexport ANTHROPIC_API_KEY=...import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-fable-5-2",claude-fable-5-2Request example
import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-fable-5-2",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}]
)
print(message.content[0].text)Gotchas
- Use the versioned model ID, e.g. "claude-sonnet-4-6" or "claude-opus-4-7-20251101".
- The examples expect ANTHROPIC_API_KEY; rename it only if your application config maps the new variable.
Compare Claude Fable 5.2 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Anthropic | $8.00 | $40.00 |
| AWS Bedrock | — | — |
| GCP Vertex AI | — | — |
| OpenRouter | $8.00 | $40.00 |
| Vercel AI Gateway | $8.00 | $40.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $8.00 |
| Output tokens | $40.00 |
Capabilities
About Claude Fable 5.2
Claude Fable 5.2 is Anthropic's generally available Mythos-class model for demanding reasoning and long-horizon agentic work, released November 9, 2026. It is the same underlying model as Claude Mythos 5.2 with cybersecurity and biology safeguards; requests those safeguards catch can fall back to other Claude models. Claude API id claude-fable-5-2. 1M-token context, 128K max output, adaptive thinking always on (default effort high), text and image input to text output. Knowledge cutoff June 2026. Anthropic documents model IDs for the Claude API, Amazon Bedrock, Claude Models on Google Cloud (Google-managed and Anthropic-managed), Microsoft Foundry and Claude Platform on AWS.