# Claude Sonnet 4.5 vs Inkling 2 Small

> Side-by-side benchmark comparison for Claude Sonnet 4.5 and Inkling 2 Small across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-4-5-vs-inkling-2-small
- Last updated: November 7, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Sonnet 4.5 and Inkling 2 Small share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Inkling 2 Small has the lower published output-token price.
- Inkling 2 Small has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Sonnet 4.5 | Inkling 2 Small |
|----------|----------|----------|
| Creator | Anthropic | Thinking Machines Lab |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Hybrid |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | 47.38 | 59.06 |
| Benchmarks Covered | 12 | 25 |
| Pricing (input/output) | $3.00 / $15.00 | $0.30 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 35.9 (Estimated · #81/131)
- Inkling 2 Small public-lane score: 59.9 (Supported · #26/131)

| Benchmark | Claude Sonnet 4.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 50% | Coming soon | Coming soon |
| OSWorld-Verified | 61.4% | Coming soon | Coming soon |
| VITA-Bench | 17.0% | Coming soon | Coming soon |
| Gert Labs | 48.51% | Coming soon | Coming soon |
| JobBench | 27.7% | 70.5% | Inkling 2 Small |
| Terminal-Bench 2.1 | Coming soon | 85.1% | Coming soon |
| BrowseComp | Coming soon | 90.2% | Coming soon |
| DeepSearchQA | Coming soon | 90.9% | Coming soon |
| MCP Atlas | Coming soon | 85% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: Coming soon
- Inkling 2 Small public-lane score: 59.7 (Supported · #20/157)

| Benchmark | Claude Sonnet 4.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.2% | 82.2% | Inkling 2 Small |
| Terminal-Bench 2.0 | 50.0% | Coming soon | Coming soon |
| SWE Multilingual | Coming soon | 81.2% | Coming soon |
| sweMarathon | Coming soon | 38.8% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.1% | Coming soon |
| DeepSWE | Coming soon | 72.1% | Coming soon |
| PostTrainBench v1.2 | Coming soon | 31.9% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 21.2 (Unranked · 1 rankable row)
- Inkling 2 Small public-lane score: 86.1 (Unranked · 2 rankable rows)

| Benchmark | Claude Sonnet 4.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 13.6% | Coming soon | Coming soon |
| LongBench v2 | Coming soon | 70.6% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: Coming soon
- Inkling 2 Small public-lane score: 86.6 (#12/59)

| Benchmark | Claude Sonnet 4.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | Coming soon | 87.7% | Coming soon |
| CharXiv w/o tools | Coming soon | 85.6% | Coming soon |
| Chartography (no tools) | Coming soon | 36.7% | Coming soon |
| Chartography (tools) | Coming soon | 80.4% | Coming soon |
| BabyVision | Coming soon | 68.6% | Coming soon |
| BabyVision w/ Python | Coming soon | 93.7% | Coming soon |
| ScreenSpot Pro | Coming soon | 83.8% | Coming soon |
| PerceptionBench | Coming soon | 64.7% | Coming soon |
| MathVision | Coming soon | 92.8% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: Coming soon
- Inkling 2 Small public-lane score: 60.4 (Estimated · #46/178)

| Benchmark | Claude Sonnet 4.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 83.4% | 93% | Inkling 2 Small |
| GPQA-D | Coming soon | 93.0% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 32.9 (Unranked · 2 rankable rows)
- Inkling 2 Small public-lane score: 85.9 (Unranked · 2 rankable rows)

| Benchmark | Claude Sonnet 4.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 87% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 23.860% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 2.439% | Coming soon | Coming soon |
| HMMT Feb 2026 | Coming soon | 95.8% | Coming soon |
| Apex | Coming soon | 63.5% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Sonnet 4.5 and Inkling 2 Small?

Not yet. The models share only 3 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Claude Sonnet 4.5 vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-vs-claude-sonnet-4-5-thinking)
- [Inkling 2 Small vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-thinking-vs-inkling-2-small)
- [Claude Sonnet 4.5 vs Inkling-Small](/compare/claude-sonnet-4-5-vs-inkling-small)
- [Inkling 2 Small vs Inkling-Small](/compare/inkling-2-small-vs-inkling-small)

## Explore More

- [Claude Sonnet 4.5 profile](/models/claude-sonnet-4-5)
- [Inkling 2 Small profile](/models/inkling-2-small)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)