# Agents-A1-4B vs Claude Fable 5

> Side-by-side benchmark comparison for Agents-A1-4B and Claude Fable 5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/agents-a1-4b-vs-claude-fable
- Last updated: September 10, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Agents-A1-4B and Claude Fable 5.

## Summary

- Agents-A1-4B and Claude Fable 5 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Agents-A1-4B | Claude Fable 5 |
|----------|----------|----------|
| Creator | InternScience | Anthropic |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M+ |
| Independent public score (not head-to-head) | null | 81.43 |
| Benchmarks Covered | 11 | 18 |
| Pricing (input/output) | $0.00 / $0.00 | $10.00 / $50.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- Claude Fable 5 public-lane score: 74.6 (Supported · #3/152)

| Benchmark | Agents-A1-4B | Claude Fable 5 | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | 66.8% | Coming soon | Coming soon |
| GAIA | 95.1% | Coming soon | Coming soon |
| MLE-Bench Lite | 22.7% | Coming soon | Coming soon |
| τ²-bench results | 78.2% | Coming soon | Coming soon |
| VITA-Bench | 40.3% | Coming soon | Coming soon |
| Terminal-Bench 3.0 | Coming soon | 34.0% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 84.3% | Coming soon |
| OSWorld-Verified | Coming soon | 85% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 80.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- Claude Fable 5 public-lane score: 77 (Supported · #2/151)

| Benchmark | Agents-A1-4B | Claude Fable 5 | Winner |
|-----------|-----------|-----------|--------|
| SciCode | 29.6% | Coming soon | Coming soon |
| LiveCodeBench v6 | 59.6% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 95% | Coming soon |
| SWE-bench Pro | Coming soon | 80% | Coming soon |
| FrontierSWE v2 | Coming soon | 47.0% | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 53.5% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 84.3% | Coming soon |
| cursorBench31 | Coming soon | 70.6% | Coming soon |
| cursorBench32 | Coming soon | 70.5% | Coming soon |
| VulcanBench v3 | Coming soon | 89.5% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 89.8% | Coming soon |
| SWE-bench (Vals) | Coming soon | 95.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- Claude Fable 5 public-lane score: 62.5 (Unranked · 2 rankable rows)

| Benchmark | Agents-A1-4B | Claude Fable 5 | Winner |
|-----------|-----------|-----------|--------|
| Blueprint-Bench 2 | Coming soon | 38.6% | Coming soon |
| OfficeQA Pro | Coming soon | 57.9% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- Claude Fable 5 public-lane score: 77.6 (#6/20)

| Benchmark | Agents-A1-4B | Claude Fable 5 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 52.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- Claude Fable 5 public-lane score: 83.3 (Supported · #2/183)

| Benchmark | Agents-A1-4B | Claude Fable 5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience Research | 33.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 93.2% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 91.5% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- Claude Fable 5 public-lane score: 78.5 (#56/123)

| Benchmark | Agents-A1-4B | Claude Fable 5 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 69.1% | Coming soon | Coming soon |
| IFEval | 94.8% | Coming soon | Coming soon |

## FAQ

### Can I compare Agents-A1-4B and Claude Fable 5 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Agents-A1-4B vs Agents-A1](/compare/agents-a1-vs-agents-a1-4b)
- [Claude Fable 5 vs Agents-A1](/compare/agents-a1-vs-claude-fable)
- [Agents-A1-4B vs Agents-A1-F16-GGUF](/compare/agents-a1-4b-vs-agents-a1-f16-gguf)
- [Claude Fable 5 vs Agents-A1-F16-GGUF](/compare/agents-a1-f16-gguf-vs-claude-fable)

## Explore More

- [Agents-A1-4B profile](/models/agents-a1-4b)
- [Claude Fable 5 profile](/models/claude-fable)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)