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...
Cost / 1M tokens
Very high usage$8.00
input
$0.20
cached input
$40.00
output
Context Window
1M
Up to 128K max output
Modalities
text, image, file → text
Claude tokenizer
Quickstart & API
anthropic/claude-fable-5.2Best for & Strengths
Key Strengths
Recommended Workloads in ChatOSS
- Coding agents
- Complex reasoning & debugging
- Screenshot-to-code workflows
Verified Evaluations
Benchmarks & Frontier Comparison
How Claude Fable 5.2 compares against leading open-weight and proprietary frontier models across independent agentic coding and reasoning suites.
| Benchmark (Metric) | Claude Fable 5.2 | DeepSeek V4.1 Flash | GLM 5.3 | Kimi K3.1 Pro | Claude Opus 5.5 |
|---|---|---|---|---|---|
| Agentic & Software Engineering | |||||
| ChatOSS Agentic Coding Index (%) | — | 63.2% | 58.3% | 65% | 74.1% |
| SWE-Bench Verified (%) | — | 91.5% | 95.4% | 94.8% | 97% |
| DeepSWE v1.1 (Pass@1 %) | — | 77% | 69% | 73.5% | 74.2% |
| Vibe Code Bench v1.1 (%) | — | 87.7% | 78.1% | 88.4% | 90.3% |
| Terminal-Bench 4.0 (%) | — | 42.3% | 42% | 46.2% | 65.2% |
| Code Migration (%) | — | 45.6% | 44.2% | 52% | 66.7% |
| Intelligence & Token Economics | |||||
| Artificial Analysis Intelligence Index (0–100) | 64.6 | 39.5 | 44.8 | 55.1 | 57.6 |
| Input Price (/ 1M tokens) | $8.00 | $0.15 | $1.40 | $2.00 | $4.00 |
| Output Price (/ 1M tokens) | $40.00 | $0.60 | $4.40 | $10.00 | $20.00 |
Artificial Analysis Intelligence Index
Artificial Analysis
Design Arena: MOBILEAPPS
Design Arena · Rank #2 (65.6% win)
Design Arena: PDF
Design Arena · Rank #1 (76.9% win)
Design Arena: 3D
Design Arena · Rank #1 (76.8% win)
Design Arena: Code Generation
Design Arena · Rank #3 (62.2% win)
Active Provider Endpoints (5)
Upstream inference providers serving Claude Fable 5.2, with per-provider pricing, context limits, quantization, and 24-hour uptime.
| Provider | Input / 1M | Output / 1M | Cache Read / 1M | Context | Max Output | Quantization | Uptime (24h) |
|---|---|---|---|---|---|---|---|
Google google-vertex/global | $8.00 | $40.00 | $0.20 | 1M | 128K | — | 100.0% |
Amazon Bedrock amazon-bedrock | $8.00 | $40.00 | $0.20 | 1M | 128K | — | — |
Azure azure | $8.00 | $40.00 | $0.20 | 1M | 128K | — | 100.0% |
Anthropic anthropic | $8.00 | $40.00 | $0.20 | 1M | 128K | — | 100.0% |
Anthropic anthropic/fast | $16.00 | $80.00 | $0.40 | 1M | 128K | — | 100.0% |
Supported API Parameters
Parameters accepted by this model when called through ChatOSS or OpenRouter.
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