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Claude Fable 5.2

Tools
anthropic/claude-fable-5-2

Vision · 1M context · Nov 2026 · 5 upstreams

Anthropic's Claude Fable 5.2 is a frontier model for the most demanding technical work, with gains over Fable 5.1 in coding, reasoning and vision. It supports text and image input, a 1M-token context window, 128K max output, and adaptive thinking (always on, default high effort). Announced 2026-11-09.

Needs your own keyTo use Claude Fable 5.2, add your Anthropic key, or a key from another provider that serves it. AnyRouter adds no fee.
context
1M
input / 1M (list)
$8.00
output / 1M (list)
$40.00
routes
5
speed, 24h
No data yet

Upstreams

5
  1. 1AnthropicYour keynot addedBilled to your key
  2. 2Amazon BedrockYour keynot addedBilled to your key
  3. 3Google Vertex AIYour keynot addedBilled to your key
  4. 4Microsoft AzureYour keynot addedBilled to your key
  5. 5OpenRouterYour keynot addedBilled to your key

Quick start

curl
curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "anthropic/claude-fable-5-2",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'

Details

Owner
Anthropic
Kind
Vision
Released
Nov 2026
Context
1M
Data policy
Provider retention
Endpoint
/api/v1/chat/completions