Anthropic model product
Claude Fable 5
Claude Fable 5 is Anthropic's generally available large language model deployment with production safeguards, exposed through the Claude API as `claude-fable-5`.
Updated Oct 23, 2026. Default version: Claude Fable 5
LLMBoard Score89.0Claude Fable 5
Coverage80%18 benchmark families
Context window1MTokens
Official input price$10Anthropic API
Claude Fable 5 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Claude Fable 5 Benchmark Results
Benchmark scores for Claude Fable 5.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkBlueprint-Bench 2 | Score38.60% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkFrontierSWE | Score90.00% | Rank01 | Participants17 | Percentile100.00% | EvidenceB | Evaluated |
| BenchmarkLegal Agent Benchmark | Score13.30% | Rank01 | Participants15 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkSWE-Bench Verified | Score95.00% | Rank01 | Participants120 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkLM Arena Document Style Control | Score1,498.88 rating | Rank01 | Participants38 | Percentile100.00% | EvidenceA | Evaluated |
| BenchmarkLM Arena Vision | Score1,324.88 rating | Rank01 | Participants113 | Percentile100.00% | EvidenceA | Evaluated |
| BenchmarkLM Arena Vision Style Control | Score1,308.71 rating | Rank01 | Participants113 | Percentile100.00% | EvidenceA | Evaluated |
| BenchmarkExploitBench | Score78.00% | Rank02 | Participants8 | Percentile85.71% | EvidenceC | Evaluated |
| BenchmarkFrontierCode 1.1 | Score53.50% | Rank02 | Participants23 | Percentile95.45% | EvidenceB | Evaluated |
| BenchmarkHealthBench Professional | Score66.00% | Rank02 | Participants20 | Percentile94.74% | EvidenceC | Evaluated |
| BenchmarkOSWorld-Verified | Score85.00% | Rank02 | Participants28 | Percentile96.30% | EvidenceC | Evaluated |
| BenchmarkAA Omniscience Accuracy | Score65.35% | Rank02 | Participants201 | Percentile99.50% | EvidenceB | EvaluatedN/A |
| BenchmarkAA HLE Text No Tools | Score55.47% | Rank02 | Participants200 | Percentile99.50% | EvidenceB | EvaluatedN/A |
| BenchmarkAA SciCode Subtasks | Score61.00% | Rank02 | Participants89 | Percentile98.86% | EvidenceB | EvaluatedN/A |
| BenchmarkFrontierCode | Score46.30% | Rank03 | Participants4 | Percentile33.33% | EvidenceC | Evaluated |
| BenchmarkSWE-Bench Pro | Score80.00% | Rank03 | Participants63 | Percentile96.77% | EvidenceC | Evaluated |
| BenchmarkLM Arena Text Style Control | Score1,503.66 rating | Rank03 | Participants218 | Percentile99.08% | EvidenceA | Evaluated |
| BenchmarkHumanity's Last Exam | Score64.50% | Rank04 | Participants109 | Percentile97.22% | EvidenceC | Evaluated |
| BenchmarkLM Arena Agent Leaderboard | Score8.31% | Rank04 | Participants44 | Percentile93.02% | EvidenceA | Evaluated |
| BenchmarkLM Arena Agent Bash Recovery Steps | Score9.60% | Rank04 | Participants44 | Percentile93.02% | EvidenceA | Evaluated |
| BenchmarkLM Arena Agent Praise Complaint | Score16.94% | Rank04 | Participants44 | Percentile93.02% | EvidenceA | Evaluated |
| BenchmarkLM Arena Agent Steerability | Score10.15% | Rank04 | Participants44 | Percentile93.02% | EvidenceA | Evaluated |
| BenchmarkLM Arena Agent Tool Hallucination | Score0.67% | Rank04 | Participants44 | Percentile93.02% | EvidenceA | Evaluated |
| BenchmarkLM Arena Document | Score1,496.08 rating | Rank04 | Participants38 | Percentile91.89% | EvidenceA | Evaluated |
| BenchmarkLM Arena Agent Bash Reliability No Prereq | Score12.87% | Rank04 | Participants45 | Percentile93.18% | EvidenceA | Evaluated |
| BenchmarkLM Arena Agent Bash Reliability | Score11.95% | Rank04 | Participants44 | Percentile93.02% | EvidenceA | Evaluated |
| BenchmarkFinance Agent v2 | Score56.31% | Rank05 | Participants29 | Percentile85.71% | EvidenceB | Evaluated |
| BenchmarkLiveBench | Score78.31% | Rank05 | Participants38 | Percentile89.19% | EvidenceB | Evaluated |
| BenchmarkLM Arena Search Style Control | Score1,229.02 rating | Rank05 | Participants33 | Percentile87.50% | EvidenceA | Evaluated |
| BenchmarkBioMysteryBench | Score46.10% | Rank06 | Participants7 | Percentile16.67% | EvidenceC | Evaluated |
Claude Fable 5 Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenadocument style control | Categoryoverall | Rank01 | Rating / score1,498.88 | Votes8,497 | ObservationsN/A | Result date |
| Arenatext style control | Categoryexpert | Rank01 | Rating / score1,549.86 | Votes4,790 | ObservationsN/A | Result date |
| Arenatext style control | Categoryfrench | Rank01 | Rating / score1,523.66 | Votes1,513 | ObservationsN/A | Result date |
| Arenatext style control | Categoryspanish | Rank01 | Rating / score1,504.53 | Votes1,361 | ObservationsN/A | Result date |
| Arenavision | Categorydiagram | Rank01 | Rating / score1,356.70 | Votes3,956 | ObservationsN/A | Result date |
| Arenavision | Categoryocr | Rank01 | Rating / score1,336.98 | Votes10,497 | ObservationsN/A | Result date |
| Arenavision | Categoryoverall | Rank01 | Rating / score1,324.88 | Votes14,714 | ObservationsN/A | Result date |
| Arenavision style control | Categorydiagram | Rank01 | Rating / score1,352.55 | Votes3,956 | ObservationsN/A | Result date |
| Arenavision style control | Categoryenglish | Rank01 | Rating / score1,303.18 | Votes5,874 | ObservationsN/A | Result date |
| Arenavision style control | Categoryhomework | Rank01 | Rating / score1,351.86 | Votes1,751 | ObservationsN/A | Result date |
| Arenavision style control | Categoryhumor | Rank01 | Rating / score1,323.73 | Votes583 | ObservationsN/A | Result date |
| Arenavision style control | Categoryocr | Rank01 | Rating / score1,326.39 | Votes10,497 | ObservationsN/A | Result date |
| Arenavision style control | Categoryoverall | Rank01 | Rating / score1,308.71 | Votes14,714 | ObservationsN/A | Result date |
| Arenatext style control | Categorycoding | Rank02 | Rating / score1,550.90 | Votes11,128 | ObservationsN/A | Result date |
| Arenatext style control | Categorymulti turn | Rank02 | Rating / score1,517.24 | Votes7,046 | ObservationsN/A | Result date |
| Arenatext style control | Categorypolish | Rank02 | Rating / score1,513.25 | Votes646 | ObservationsN/A | Result date |
| Arenavision | Categorycreative writing vision | Rank02 | Rating / score1,337.70 | Votes1,159 | ObservationsN/A | Result date |
| Arenavision | Categoryenglish | Rank02 | Rating / score1,323.15 | Votes5,874 | ObservationsN/A | Result date |
| Arenavision | Categoryhomework | Rank02 | Rating / score1,360.87 | Votes1,751 | ObservationsN/A | Result date |
| Arenavision | Categoryhumor | Rank02 | Rating / score1,340.72 | Votes583 | ObservationsN/A | Result date |
| Arenavision style control | Categorycreative writing vision | Rank02 | Rating / score1,318.63 | Votes1,159 | ObservationsN/A | Result date |
| Arenatext style control | Categorycreative writing | Rank03 | Rating / score1,500.85 | Votes9,368 | ObservationsN/A | Result date |
| Arenatext style control | Categoryexclude ties | Rank03 | Rating / score1,523.18 | Votes32,680 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry entertainment and sports and media | Rank03 | Rating / score1,492.80 | Votes11,349 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry legal and government | Rank03 | Rating / score1,510.88 | Votes3,627 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry life and physical and social science | Rank03 | Rating / score1,525.52 | Votes7,086 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry software and it services | Rank03 | Rating / score1,538.75 | Votes16,098 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry writing and literature and language | Rank03 | Rating / score1,507.84 | Votes12,225 | ObservationsN/A | Result date |
| Arenatext style control | Categoryjapanese | Rank03 | Rating / score1,518.10 | Votes643 | ObservationsN/A | Result date |
| Arenatext style control | Categorykorean | Rank03 | Rating / score1,495.34 | Votes806 | ObservationsN/A | Result date |
Claude Fable 5 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $10 input, $50 output per 1M
- Official provider
- Anthropic
- Lowest third-party
- From $3 input, $18.5 output per 1M via Xpersona
- Tracked offerings
- 45
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderXpersona | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$3 | Output / 1M$18.5 | Context1M | Updated |
| ProviderOrcaRouter | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderNanoGPT | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderVertex | Provider model IDclaude-fable-5@default | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderImpossibl | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderOpenRouter | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderVertex (Anthropic) | Provider model IDclaude-fable-5@default | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderCrossModel | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderSnowflake Cortex | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderAnthropic | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderAmazon Bedrock | Provider model IDanthropic.claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderLLM Gateway | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderMerge Gateway | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderCloudflare AI Gateway | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderZenMux | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderFreeModel | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderOfox | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderNeon | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderAzure Cognitive Services | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderOpenCode | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderAzure | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderVercel AI Gateway | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderEden AI | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderDevPass (LLM Gateway) | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderGitHub Copilot | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderModelis | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderKilo Gateway | Provider model IDanthropic/claude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderVenice AI | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderAbacus | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
| ProviderVivgrid | Provider model IDclaude-fable-5 | Regionglobal | Input / 1M$10 | Output / 1M$50 | Context1M | Updated |
Claude Fable 5 Runtime Performance
Provider-specific output speed and catalog latency for Claude Fable 5. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Claude Fable 5 Specifications
Technical details for the model's default version.
- Version
- Claude Fable 5
- Released
- Jun 9, 2026
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- 1M
- Max output
- 1M
- Inputs
- image, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Claude Fable 5 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionClaude Fable 5 | Released | LLMBoard88.96 | ParametersN/A | Context1M | Max output1M | Open weightsNo | LicenseProprietary |
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What is Claude Fable 5?
Key information about Claude Fable 5 and its available data.
Claude Fable 5 is a safeguarded public deployment of the same underlying weights as Anthropic's restricted Claude Mythos 5 model. It is priced at $10 per million input tokens and $50 per million output tokens.
Data as of 2026-10-22.
FAQ
Common questions about Claude Fable 5.
When was Claude Fable 5 released?
Claude Fable 5's default version was released on Jun 9, 2026.
How much does Claude Fable 5 cost?
Claude Fable 5's official API price is $10 per million input tokens and $50 per million output tokens via Anthropic. The lowest tracked third-party offer starts at $3 input and $18.5 output via Xpersona.
Who created Claude Fable 5?
Claude Fable 5 was created by Anthropic.
What is the context window for Claude Fable 5?
The default version has a 1M token context window.
Is Claude Fable 5 open weight?
No. The default version is not marked as having publicly available weights.