# Claude Fable 5.2 vs Inkling

> Side-by-side benchmark comparison for Claude Fable 5.2 and Inkling across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-5-2-vs-inkling
- Last updated: November 9, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Claude Fable 5.2 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Fable 5.2 has the higher overall point estimate 91.19 to 48.02. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 90.7 for Claude Fable 5.2 and 36.7 for Inkling.
- The biggest single benchmark swing is FrontierSWE v2 in Coding, with scores of 69.9% and 4.1%.
- Inkling is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Fable 5.2 | Inkling |
|----------|----------|----------|
| Creator | Anthropic | Thinking Machines Lab |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 1M | 1M |
| Overall Score | 91.19 | 48.02 |
| Benchmarks Covered | 30 | 24 |
| Pricing (input/output) | $8.00 / $40.00 | $1.87 / $4.68 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 90.7 (Estimated · #1/132)
- Inkling public-lane score: 36.7 (Supported · #80/132)

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 67.60% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 74.6% | Coming soon | Coming soon |
| AutomationBench | 51.4% | Coming soon | Coming soon |
| OSWorld 2.1 Offline | 89.3% | Coming soon | Coming soon |
| WANDR | 82.1% | Coming soon | Coming soon |
| Remote Labor Index | 41.3% | Coming soon | Coming soon |
| RoboDojo Sim | 64.9% | Coming soon | Coming soon |
| DRACO | 87.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 63.8% | Coming soon |
| BrowseComp | Coming soon | 77.1% | Coming soon |
| MCP Atlas | Coming soon | 74.1% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 47.6% | Coming soon |
| CWE-bench v1 | Coming soon | 37.0% | Coming soon |

### Coding

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 86.9 (Estimated · #1/158)
- Inkling public-lane score: 33.7 (Supported · #96/158)

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 93% | 54.3% | Claude Fable 5.2 |
| SWE Multilingual | 96.6% | Coming soon | Coming soon |
| SWE Multimodal | 74.1% | Coming soon | Coming soon |
| DeepSWE | 74.3% | Coming soon | Coming soon |
| FrontierSWE v2 | 69.9% | 4.1% | Claude Fable 5.2 |
| ProgramBench | 85.6% | Coming soon | Coming soon |
| FrontierCode 2.0 | 49.1% | Coming soon | Coming soon |
| CursorBench 4.0 | 60.0% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 77.6% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 63.8% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 77.6% | Coming soon |

### Reasoning

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 90.7 (Supported · #1/157)
- Inkling public-lane score: 37.7 (Estimated · #93/157)

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-3 | 65.7% | Coming soon | Coming soon |
| ARC-AGI-3 Provider Adapter | 94.90% | Coming soon | Coming soon |
| STEM Professor Bench | 61.8% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 89.8 (Estimated · #1/67)
- Inkling public-lane score: 49.9 (Estimated · #56/67)

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 73.4% | Coming soon | Coming soon |
| Chartography (tools) | 91.6% | Coming soon | Coming soon |
| OfficeQA | 83.4% | Coming soon | Coming soon |
| OfficeQA Pro | 72.9% | Coming soon | Coming soon |
| BenchCAD 2.1 | 75.4% | Coming soon | Coming soon |
| BenchCAD 2.1 (tools) | 83.5% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 73.5% | Coming soon |
| CharXiv | Coming soon | 82% | Coming soon |
| CharXiv w/o tools | Coming soon | 78.1% | Coming soon |

### Knowledge

- Winner: Claude Fable 5.2
- Claude Fable 5.2 public-lane score: 97.6 (Supported · #1/179)
- Inkling public-lane score: 50.3 (Supported · #79/179)

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| HLE | 74.2% | 46% | Claude Fable 5.2 |
| HLE w/o tools | 73.2% | 30% | Claude Fable 5.2 |
| PhysicianBench | 64.4% | Coming soon | Coming soon |
| GPQA | Coming soon | 87.9% | Coming soon |
| GPQA-D | Coming soon | 87.9% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 87.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.3% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- Inkling public-lane score: Coming soon

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| GMMLU | 96.0% | Coming soon | Coming soon |
| MILU | 94.1% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- Inkling public-lane score: 87.6 (#40/157)

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.8% | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- Inkling public-lane score: 54.8 (#9/12)

| Benchmark | Claude Fable 5.2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 97.1% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 33.333% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.878% | Coming soon |

## FAQ

### Which is better overall, Claude Fable 5.2 or Inkling?

Claude Fable 5.2 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Fable 5.2 and Inkling?

The widest category gap is in agentic, where the averages are 90.7 for Claude Fable 5.2 and 36.7 for Inkling.

### How many benchmarks does Claude Fable 5.2 cover on BenchLM?

Claude Fable 5.2 currently has 30 sourced benchmark scores on BenchLM.

### How many benchmarks does Inkling cover on BenchLM?

Inkling currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Fable 5.2 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-fable-5-2)
- [Inkling vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-inkling)
- [Claude Fable 5.2 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-2)
- [Inkling vs Claude Fable 5](/compare/claude-fable-vs-inkling)

## Explore More

- [Claude Fable 5.2 profile](/models/claude-fable-5-2)
- [Inkling profile](/models/inkling)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)