Capability
82.7/100
field median 57.3
#3 of 214 ranked models
Model profile · Anthropic
Claude Fable 5
Claude Fable 5 scores 82.7 out of 100 and ranks #3 of 214. This profile shows 11 source-displayable benchmark rows; its strongest eligible category is Coding at #2. API pricing is $10 input and $50 output per million tokens, with cached input at $1.
Data as of July 31, 2026 · How the score is built
Strongest published evidence
Coding ranks #2. Particularly well-suited for software development and code generation tasks.
Validate before choosing
11 published rows leave some tracked benchmark slots empty. Independent runtime speed has not been measured.
Decision snapshot
Each value carries a field reference instead of floating alone. Markers compare this model with the current ranked and priced catalog; they are not absolute quality thresholds.
Price
$10input / $50 output
input median $1
cached $1 · batch + cache $0.50 · blended $30
Speed
Not measured
field median 108 tok/s
Time to first token not measured
Context
1Mtokens
field median 256,000
Maximum output length is tracked separately
Capability shape
Each axis shows percentile within that category’s eligible cohort. The comparison outline is the median of the six nearest public-score peers; a collapsed vertex means the category is not rank-eligible.
Claude Fable 5 category percentile values
- Agentic95th percentile
- Coding99th percentile
- ReasoningNot eligible
- KnowledgeNot eligible
- MathNot eligible
- MultilingualNot eligible
- MultimodalNot eligible
- Instruction followingNot eligible
The dashed outline is median of 6 nearest peers.
Eligible category ranks
- Agentic#7/128
- Coding#2/129
- ReasoningNot ranked
- KnowledgeNot ranked
- MathNot ranked
- MultilingualNot ranked
- MultimodalNot ranked
- Inst. FollowingNot ranked
Top decileTop quartileMid-fieldNot eligible
What it costs to get this score
Published API price against the public score. The x-axis uses a log scale; the dashed path marks models that are not beaten by a cheaper, higher-scoring option. Price uses average of published input and output rates.
The chart opens on the current model. Scroll horizontally to inspect the full price axis.
Current modelClaude Fable 5 · 82.7 score · $30 blended per million tokens
Horizontal: blended price per million tokens, log scale · Vertical: public score
How much of this is verified
Coverage is split by category so a strong number never hides a thin evidence base. Verified means the row is tied to a published source; provisional rows remain visible but separate.
- Agentic2/2 verified
- Coding7/7 verified
- ReasoningNot measured
- KnowledgeNot measured
- MathNot measured
- MultilingualNot measured
- Multimodal2/2 verified
- Inst. FollowingNot measured
Verified sourceProvisionalNot measured
Spec sheet
Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.
- API model ID
- claude-fable-5Anthropic model overview
- Context window
- 1MAnthropic model overview
- Maximum output
- Not sourced yet
- Knowledge cutoff
- Not sourced yet
- Input modalities
- text, imageAnthropic model overview
- Output modalities
- textAnthropic model overview
- Parameters
- Not disclosed by the provider
- Availability
- Claude APIAnthropic model overview
- Cloud regions
- Not tracked yet
- Lifecycle
- activeAnthropic model overview
- API capabilities
- Tool calling, structured outputs, and batch support are not tracked yet
- Prompt caching
- Published at $1 per million cached input tokensClaude API pricing
- Self-host
- Weights are not published
- Rate limits
- Not tracked yet
Category score record
Scores and ranks appear only where published evidence can be displayed. The table keeps the score, weight, cohort, and evidence state together.
| Category | Score | Rank | Percentile | Weight | Benchmarks | Evidence |
|---|---|---|---|---|---|---|
| AgenticRank #7 of 128Percentile 95thWeight 22%2 benchmarksVerified | 65.4 | #7 of 128 | 95th | 22% | 2 benchmarks | Verified |
| CodingRank #2 of 129Percentile 99thWeight 20%7 benchmarksVerified | 79.8 | #2 of 129 | 99th | 20% | 7 benchmarks | Verified |
| ReasoningWeight 17%0 benchmarksNot measured | Not measured | Not ranked | Not available | 17% | 0 benchmarks | Not measured |
| KnowledgeWeight 12%0 benchmarksNot measured | Not measured | Not ranked | Not available | 12% | 0 benchmarks | Not measured |
| MathWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | Not ranked | Not available | 7% | 0 benchmarks | Not measured |
| MultimodalRank Not rankedWeight 12%2 benchmarksVerified | 63.9 | Not ranked | Not available | 12% | 2 benchmarks | Verified |
| Inst. FollowingWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
Benchmark ledger
Coding opens by default. The marker compares each value with the best source-verified result in the catalog; provisional leaders do not set the reference. Expand the remaining categories for every published row.
Coding7 rows
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| SWE-bench VerifiedSoftware Engineering Benchmark Verified | Score95% | Versus best verified row Best verified: Claude Opus 5 · 96% | Gap1 behind | WeightWeighted 16% | |
| SWE-bench Pro | Score80% | Versus best verified row Best verified: Claude Mythos 5 · 80.3% | Gap0.3 behind | WeightWeighted 10% | |
| FrontierCode 1.1 Main | Score53.5% | Versus best verified row Best verified: Claude Fable 5 · 53.5% | GapBest verified | WeightDisplay only | Benchmark exact |
| Terminal-Bench 2.0 | Score84.3% | Versus best verified row Best verified: GPT-5.6 Sol · 91.9% | Gap7.6 behind | WeightDisplay only | |
| cursorBench31 | Score70.6% | Versus best verified row Best verified: Claude Fable 5 · 70.6% | GapBest verified | WeightDisplay only | Benchmark exact |
| cursorBench32 | Score70.5% | Versus best verified row Best verified: Claude Fable 5 · 70.5% | GapBest verified | WeightDisplay only | Benchmark exact |
| VulcanBench v3 | Score87.0% | Versus best verified row Best verified: Grok 4.5 · 91.3% | Gap4.3 behind | WeightDisplay only | Benchmark exact |
Agentic2 rows
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| Terminal-Bench 2.0 | Score84.3% | Versus best verified row Best verified: GPT-5.6 Sol · 91.9% | Gap7.6 behind | WeightWeighted 38% | |
| OSWorld-Verified | Score85% | Versus best verified row Best verified: Claude Mythos 5 · 85% | GapBest verified | WeightWeighted 34% |
Multimodal2 rows
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| OfficeQA Pro | Score57.9% | Versus best verified row Best verified: Claude Opus 5 · 66.9% | Gap9 behind | WeightWeighted 30% | |
| Blueprint-Bench 2 | Score38.6% | Versus best verified row Best verified: Claude Fable 5 · 38.6% | GapBest verified | WeightDisplay only |
Lineage
The sequence follows explicit supersedes links. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.
Jun 9, 2026 · you are here
Claude Fable 5Score 82.7 · $10 / $50
Base entry
How to read this profile
The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.
Claude Fable 5 ranks #3 of 214 on the public leaderboard with a score of 82.73/100. Its source-verified position is #3 of 103.
Claude Fable 5 is a proprietary model with a 1M context window. It uses an explicit reasoning mode, which can improve complex problem solving while adding latency and token use.
Claude Fable 5 is Anthropic's generally available Mythos-class model. It uses the same underlying model as Claude Mythos 5, with production safeguards for cybersecurity, biology, chemistry, distillation, and frontier-AI-development requests. Some Claude clients route flagged requests to Claude Opus 4.8; the Messages API blocks by default unless fallback is configured.
Updated from Anthropic's June 9, 2026 Claude Fable 5 and Claude Mythos 5 launch pages and system card, supplemented by CursorBench v3.1 and CursorBench v3.2's Fable 5 Max setting. Anthropic says Fable 5 and Mythos 5 use the same underlying model, with Fable adding production safeguards and fallback/block behavior. BenchLM maps the launch and model-card rows that already fit the public schema.
11 of 376 tracked benchmark slots currently have displayable evidence. Missing categories stay blank.
Its strongest eligible category is Coding at #2, while its lowest eligible position is Agentic at #7. particularly well-suited for software development and code generation tasks.
Radar
Full release historyClaude Fable 5 release history
Claude Fable 5 and Claude Mythos 5 released
Anthropic · Model release
Source confirmed
Frequently asked questions
How does Claude Fable 5 perform overall in AI benchmarks?
Claude Fable 5 ranks #3 out of 214 models on the public BenchAlign leaderboard, with a score of 82.73/100. Its evidence status is Supported, and this profile shows 11 source-displayable benchmark rows. The label describes evidence depth, not a provider quality claim; inspect category rows before choosing a workload.
Is Claude Fable 5 good for coding and programming?
Claude Fable 5 ranks #2 out of 129 eligible models for coding and programming, with a public category score of 79.8/100. That places it in the current top ten for this category. Check the underlying rows before treating the aggregate as a workload guarantee.
Is Claude Fable 5 good for agentic tool use and computer tasks?
Claude Fable 5 ranks #7 out of 128 eligible models for agentic tool use and computer tasks, with a public category score of 65.4/100. That places it in the current top ten for this category. Check the underlying rows before treating the aggregate as a workload guarantee.
Is Claude Fable 5 good for multimodal and grounded tasks?
Claude Fable 5 has source-displayable benchmark coverage for multimodal and grounded tasks, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Does Claude Fable 5 have full benchmark coverage on BenchLM?
No. Claude Fable 5 currently has 34 source-displayable rows across 376 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.
What is the context window size of Claude Fable 5?
Claude Fable 5 has a documented context window of 1M. That figure is the maximum combined prompt and retained-conversation space reported for this exact model; it is not the maximum output length. The profile keeps output limits separate because providers often publish those limits independently.
Last updated July 31, 2026. Runtime fields remain blank until a sourced snapshot exists.
Watch Claude Fable 5 in the weekly brief
Get one weekly email when material rank, price, availability, or benchmark evidence changes are worth revisiting.
Read a sample issueJoin 2,000+ readers.