# BTL-4 Compact vs Claude Sonnet 5

> Side-by-side benchmark comparison for BTL-4 Compact and Claude Sonnet 5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/btl-4-compact-vs-claude-sonnet-5
- 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 BTL-4 Compact and Claude Sonnet 5.

## Summary

- BTL-4 Compact and Claude Sonnet 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 | BTL-4 Compact | Claude Sonnet 5 |
|----------|----------|----------|
| Creator | Bad Theory Labs | Anthropic |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M |
| Independent public score (not head-to-head) | null | 69.84 |
| Benchmarks Covered | 0 | 24 |
| Pricing (input/output) | $0.00 / $0.00 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- BTL-4 Compact public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 65.8 (Supported · #11/152)

| Benchmark | BTL-4 Compact | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | Coming soon | 14.6% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 80.4% | Coming soon |
| BrowseComp | Coming soon | 84.7% | Coming soon |
| HLE w/ tools | Coming soon | 57.4% | Coming soon |
| OSWorld-Verified | Coming soon | 81.2% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 74.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- BTL-4 Compact public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 64 (Supported · #13/151)

| Benchmark | BTL-4 Compact | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 85.2% | Coming soon |
| SWE-bench Pro | Coming soon | 63.2% | Coming soon |
| SWE Multilingual | Coming soon | 78.3% | Coming soon |
| SWE Multimodal | Coming soon | 28.1% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 80.4% | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 42.7% | Coming soon |
| cursorBench32 | Coming soon | 61.5% | Coming soon |
| VulcanBench CII v1 | Coming soon | 89.2% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 82.4% | Coming soon |
| SWE-bench (Vals) | Coming soon | 79.6% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- BTL-4 Compact public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 77.5 (#13/48)

| Benchmark | BTL-4 Compact | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | Coming soon | 88.3% | Coming soon |
| CharXiv w/o tools | Coming soon | 77% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- BTL-4 Compact public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 77.4 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- BTL-4 Compact public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 66.6 (Supported · #20/183)

| Benchmark | BTL-4 Compact | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| HLE | Coming soon | 57.4% | Coming soon |
| HLE w/o tools | Coming soon | 43.2% | Coming soon |
| HLE-Verified | Coming soon | 31.0% | Coming soon |
| LABBench2 | Coming soon | 80.1% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 88.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 87.5% | Coming soon |

## FAQ

### Can I compare BTL-4 Compact and Claude Sonnet 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

- [BTL-4 Compact vs BTL-4](/compare/btl-4-vs-btl-4-compact)
- [Claude Sonnet 5 vs BTL-4](/compare/btl-4-vs-claude-sonnet-5)
- [BTL-4 Compact vs BTL-3](/compare/btl-3-vs-btl-4-compact)
- [Claude Sonnet 5 vs BTL-3](/compare/btl-3-vs-claude-sonnet-5)

## Explore More

- [BTL-4 Compact profile](/models/btl-4-compact)
- [Claude Sonnet 5 profile](/models/claude-sonnet-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)