# Cartesia Sonic 3.6 vs Claude Sonnet 4.5

> Side-by-side benchmark comparison for Cartesia Sonic 3.6 and Claude Sonnet 4.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/cartesia-sonic-3-6-vs-claude-sonnet-4-5
- 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 Cartesia Sonic 3.6 and Claude Sonnet 4.5.

## Summary

- Cartesia Sonic 3.6 and Claude Sonnet 4.5 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 | Cartesia Sonic 3.6 | Claude Sonnet 4.5 |
|----------|----------|----------|
| Creator | Cartesia | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | N/A | 200K |
| Independent public score (not head-to-head) | null | 53.82 |
| Benchmarks Covered | 0 | 11 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $3.00 / $15.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Cartesia Sonic 3.6 public-lane score: Coming soon
- Claude Sonnet 4.5 public-lane score: 44.2 (Estimated · #91/152)

| Benchmark | Cartesia Sonic 3.6 | Claude Sonnet 4.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 50% | Coming soon |
| OSWorld-Verified | Coming soon | 61.4% | Coming soon |
| VITA-Bench | Coming soon | 17.0% | Coming soon |
| Gert Labs | Coming soon | 48.51% | Coming soon |
| JobBench | Coming soon | 27.7% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Cartesia Sonic 3.6 public-lane score: Coming soon
- Claude Sonnet 4.5 public-lane score: 50.6 (Estimated · #54/151)

| Benchmark | Cartesia Sonic 3.6 | Claude Sonnet 4.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 77.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Cartesia Sonic 3.6 public-lane score: Coming soon
- Claude Sonnet 4.5 public-lane score: 19.1 (Unranked · 1 rankable row)

| Benchmark | Cartesia Sonic 3.6 | Claude Sonnet 4.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 13.6% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Cartesia Sonic 3.6 public-lane score: Coming soon
- Claude Sonnet 4.5 public-lane score: 51.2 (Estimated · #73/183)

| Benchmark | Cartesia Sonic 3.6 | Claude Sonnet 4.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 83.4% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Cartesia Sonic 3.6 public-lane score: Coming soon
- Claude Sonnet 4.5 public-lane score: 34.8 (Unranked · 2 rankable rows)

| Benchmark | Cartesia Sonic 3.6 | Claude Sonnet 4.5 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | Coming soon | 87% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 13.495% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.167% | Coming soon |

## FAQ

### Can I compare Cartesia Sonic 3.6 and Claude Sonnet 4.5 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

- [Cartesia Sonic 3.6 vs Claude Sonnet 4.5 Thinking](/compare/cartesia-sonic-3-6-vs-claude-sonnet-4-5-thinking)
- [Claude Sonnet 4.5 vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-vs-claude-sonnet-4-5-thinking)
- [Cartesia Sonic 3.6 vs Claude Fable 5.1](/compare/cartesia-sonic-3-6-vs-claude-fable-5-1)
- [Claude Sonnet 4.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-sonnet-4-5)

## Explore More

- [Cartesia Sonic 3.6 profile](/models/cartesia-sonic-3-6)
- [Claude Sonnet 4.5 profile](/models/claude-sonnet-4-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)