AI Index

Claude Fable 5.1vsClaude Fable 5.2

Both language models, compared at each maker’s own API list prices. Every figure links to its source.

Compare at your usage

Every model priced for the same request
Prompt per request
Cache hits
Batch

8,000 tokens in, 2,000 out

Claude Fable 5.1 on Claude APIClaude Fable 5.2 on Claude API
Rate appliedBase rateBase rate
Inputper 1M tokens$10.00 $8.00
Cache readper 1M tokens$0.25 $0.20
Outputper 1M tokens$50.00 $40.00
Cost per request$0.18$0.144
Per 1,000 requests$180.00$144.00

Every model is priced for the same request at its maker’s own list prices (each with its source and date), so bold marks the cheapest. A model that can’t serve the request is named, not ranked; a condition its seller doesn’t price says which rate was used.

Cost per request as prompts grow

2K tokens out, list price on each maker’s API.

0$5.00$10.000250K500K750K1Mprompt tokens per request8KClaude Fable 5.1$0.18 at 8KClaude Fable 5.2$0.144 at 8K
  • Claude Fable 5.1 · Claude API
  • Claude Fable 5.2 · Claude API

Key differences

Claude Fable 5.1Claude Fable 5.2
InputMaker’s official API · global · USD
$10.00 / 1M tokens Claude API pricing · as of Nov 8, 2026
$8.00 / 1M tokens Claude API pricing · as of Nov 9, 2026
OutputMaker’s official API · global · USD
$50.00 / 1M tokens Claude API pricing · as of Nov 8, 2026
$40.00 / 1M tokens Claude API pricing · as of Nov 9, 2026
Cache readMaker’s official API · global · USD
$0.25 / 1M tokens Claude API pricing · as of Nov 8, 2026
$0.20 / 1M tokens Claude API pricing · as of Nov 9, 2026
Cache writeMaker’s official API · global · USD · 5-minute cache
$12.50 / 1M tokens Claude API pricing · as of Nov 8, 2026
$10.00 / 1M tokens Claude API pricing · as of Nov 9, 2026
Cache writeMaker’s official API · global · USD · 1-hour cache
$20.00 / 1M tokens Claude API pricing · as of Nov 8, 2026
$16.00 / 1M tokens Claude API pricing · as of Nov 9, 2026
InputMaker’s official API · global · USD · Batch
$5.00 / 1M tokens Claude API pricing · as of Nov 8, 2026
$4.00 / 1M tokens Claude API pricing · as of Nov 9, 2026

These differences use verified vendor specifications or each maker’s official API on the same region, currency, meter and billing conditions. Different conditions remain side by side in the full table; they do not establish which model is cheaper. Declared features describe support, not measured quality or a recommendation. Missing evidence does not mean a feature is unsupported.

Full comparison

Claude Fable 5.1 Anthropic Claude Fable 5.2 Anthropic
Overview
ReleasedSep 1, 2026 Nov 9, 2026
Open weights— —
Knowledge cutoffJun 2026 Jun 2026
Specs
Context1M 1M
Max output128K 128K
Input modalitiesText, Image Text, Image
Output modalitiesText Text
ReasoningYes Yes
Reasoning effortslow, medium, high, xhigh, max high
Tool useYes Yes
Structured outputYes Yes
Pricing · per 1M tokens
Input price$10.00Also priced under other conditions: Batch $8.00Also priced under other conditions: Batch
Output price$50.00Also priced under other conditions: Batch $40.00Also priced under other conditions: Batch
Cache read price$0.25 $0.20
Cache write price$12.50Also priced under other conditions: 1-hour cache5-minute cache $10.00Also priced under other conditions: 1-hour cache5-minute cache
Cache write price (1-hour cache)$20.001-hour cache $16.001-hour cache
Blended price (3 input : 1 output)$20.00 $16.00
Pricing under conditions · per 1M tokens
Batch input price$5.00Batch $4.00Batch
Batch output price$25.00Batch $20.00Batch
Cited scores
Epoch Capabilities Index166.9 —
LMArena Text1,503 max effort—
LMArena Text · Coding1,534 max effort—
LMArena Vision1,322 max effort—
LMArena Text · Chinese1,565 max effort—
Epoch AI · FrontierMath Tiers 1–390.2% max effort—

Headline prices may come from different channels, regions or tiers. Check each source before choosing a model; missing facts stay blank.

Model details and sources

Cited scores