Model specification · Anthropic

Claude Fable 5.2

anthropic/claude-fable-5.2

Claude Fable 5.2 is Anthropic's most capable model for the most demanding technical work, with gains over Fable 5.1 in coding, reasoning, and vision. In prerelease testing it completed otherwise-infeasible...

SpecificationsReported values
Context window
1M
Maximum output
128K
Architecture
text+image+file->text
Tokenizer
Claude
Knowledge cutoff
—
Moderated
Yes
Input modalities
textimagefile
Output modalities
text
Full pricingUSD where reported
PriceStandard
Input$8.00 / M
Output$40.00 / M
Benchmark indexesReported indexes
Intelligence
64.6
Coding
—
Agentic
—
Design Arena Elo
—
Example workload costsStandard pricing only
WorkloadInput / outputCache shareEstimated cost
Quick check10K / 1K × 10%$0.120
Long analysis100K / 4K × 150%$0.570
Workday20K / 2K × 1,00030%$193.20
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