# 1-bit Bonsai 4B vs Claude Mythos 5

> Side-by-side benchmark comparison for 1-bit Bonsai 4B and Claude Mythos 5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/bonsai-4b-vs-claude-mythos-5
- Last updated: September 4, 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 1-bit Bonsai 4B and Claude Mythos 5.

## Summary

- 1-bit Bonsai 4B and Claude Mythos 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 | 1-bit Bonsai 4B | Claude Mythos 5 |
|----------|----------|----------|
| Creator | Prism ML | Anthropic |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 32K | 1M+ |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 0 | 15 |
| Pricing (input/output) | $0.00 / $0.00 | $10.00 / $50.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- 1-bit Bonsai 4B public-lane score: Coming soon
- Claude Mythos 5 public-lane score: Coming soon

| Benchmark | 1-bit Bonsai 4B | Claude Mythos 5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 88% | Coming soon |
| OSWorld-Verified | Coming soon | 85% | Coming soon |
| BrowseComp | Coming soon | 88% | Coming soon |
| CyberGym | Coming soon | 83.8% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- 1-bit Bonsai 4B public-lane score: Coming soon
- Claude Mythos 5 public-lane score: Coming soon

| Benchmark | 1-bit Bonsai 4B | Claude Mythos 5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 95.5% | Coming soon |
| SWE-bench Pro | Coming soon | 80.3% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 88.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- 1-bit Bonsai 4B public-lane score: Coming soon
- Claude Mythos 5 public-lane score: 85.1 (Unranked · 3 rankable rows)

| Benchmark | 1-bit Bonsai 4B | Claude Mythos 5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Multimodal | Coming soon | 54.9% | Coming soon |
| CharXiv | Coming soon | 93.5% | Coming soon |
| CharXiv w/o tools | Coming soon | 88.9% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- 1-bit Bonsai 4B public-lane score: Coming soon
- Claude Mythos 5 public-lane score: Coming soon

| Benchmark | 1-bit Bonsai 4B | Claude Mythos 5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 94.1% | Coming soon |
| HLE | Coming soon | 64.5% | Coming soon |
| HLE w/o tools | Coming soon | 59% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- 1-bit Bonsai 4B public-lane score: Coming soon
- Claude Mythos 5 public-lane score: Coming soon

| Benchmark | 1-bit Bonsai 4B | Claude Mythos 5 | Winner |
|-----------|-----------|-----------|--------|
| SWE Multilingual | Coming soon | 92.2% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- 1-bit Bonsai 4B public-lane score: Coming soon
- Claude Mythos 5 public-lane score: Coming soon

| Benchmark | 1-bit Bonsai 4B | Claude Mythos 5 | Winner |
|-----------|-----------|-----------|--------|
| USAMO 2026 | Coming soon | 97.6% | Coming soon |

## FAQ

### Can I compare 1-bit Bonsai 4B and Claude Mythos 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

- [1-bit Bonsai 4B vs 1-bit Bonsai 1.7B](/compare/bonsai-1-7b-vs-bonsai-4b)
- [Claude Mythos 5 vs 1-bit Bonsai 1.7B](/compare/bonsai-1-7b-vs-claude-mythos-5)
- [1-bit Bonsai 4B vs 1-bit Bonsai 8B](/compare/bonsai-4b-vs-bonsai-8b)
- [Claude Mythos 5 vs 1-bit Bonsai 8B](/compare/bonsai-8b-vs-claude-mythos-5)

## Explore More

- [1-bit Bonsai 4B profile](/models/bonsai-4b)
- [Claude Mythos 5 profile](/models/claude-mythos-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)