# Inkling 2 Small vs Solar Pro 4

> Side-by-side benchmark comparison for Inkling 2 Small and Solar Pro 4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Inkling 2 Small leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Inkling 2 Small has the higher overall point estimate 59.06 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is BrowseComp in Agentic, with scores of 90.2% and 49.2%.
- Inkling 2 Small is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Inkling 2 Small also has the larger context window at 1M.

## Model Snapshot

| Property | Inkling 2 Small | Solar Pro 4 |
|----------|----------|----------|
| Creator | Thinking Machines Lab | Upstage |
| Type | Proprietary | Proprietary |
| Reasoning | Hybrid | Reasoning |
| Context | 1M | 512K |
| Overall Score | 59.06 | null |
| Benchmarks Covered | 25 | 10 |
| Pricing (input/output) | $0.30 / $1.00 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Inkling 2 Small public-lane score: 59.9 (Supported · #26/131)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 85.1% | 57.0% | Inkling 2 Small |
| BrowseComp | 90.2% | 49.2% | Inkling 2 Small |
| DeepSearchQA | 90.9% | Coming soon | Coming soon |
| MCP Atlas | 85% | 61.4% | Inkling 2 Small |
| JobBench | 70.5% | Coming soon | Coming soon |
| APEX-Agents | Coming soon | 18.7% | Coming soon |

### Coding

- Winner: Not comparable
- Inkling 2 Small public-lane score: 59.7 (Supported · #20/157)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 82.2% | 70.6% | Inkling 2 Small |
| SWE Multilingual | 81.2% | Coming soon | Coming soon |
| sweMarathon | 38.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 85.1% | 57.0% | Inkling 2 Small |
| DeepSWE | 72.1% | Coming soon | Coming soon |
| PostTrainBench v1.2 | 31.9% | Coming soon | Coming soon |
| LiveCodeBench | Coming soon | 87.8% | Coming soon |

### Reasoning

- Winner: Not comparable
- Inkling 2 Small public-lane score: 86.1 (Unranked · 2 rankable rows)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 70.6% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Inkling 2 Small public-lane score: 86.6 (#12/59)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 87.7% | Coming soon | Coming soon |
| CharXiv w/o tools | 85.6% | Coming soon | Coming soon |
| Chartography (no tools) | 36.7% | Coming soon | Coming soon |
| Chartography (tools) | 80.4% | Coming soon | Coming soon |
| BabyVision | 68.6% | Coming soon | Coming soon |
| BabyVision w/ Python | 93.7% | Coming soon | Coming soon |
| ScreenSpot Pro | 83.8% | Coming soon | Coming soon |
| PerceptionBench | 64.7% | Coming soon | Coming soon |
| MathVision | 92.8% | Coming soon | Coming soon |

### Knowledge

- Winner: Not comparable
- Inkling 2 Small public-lane score: 60.4 (Estimated · #46/178)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 93% | Coming soon | Coming soon |
| GPQA-D | 93.0% | 89.0% | Inkling 2 Small |
| MMLU-Pro | Coming soon | 86.3% | Coming soon |

### Mathematics

- Winner: Not comparable
- Inkling 2 Small public-lane score: 85.9 (Unranked · 2 rankable rows)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| HMMT Feb 2026 | 95.8% | Coming soon | Coming soon |
| Apex | 63.5% | Coming soon | Coming soon |
| AIME26 | Coming soon | 95.3% | Coming soon |

## FAQ

### Which is better overall, Inkling 2 Small or Solar Pro 4?

Inkling 2 Small has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### How many benchmarks does Inkling 2 Small cover on BenchLM?

Inkling 2 Small currently has 25 sourced benchmark scores on BenchLM.

### How many benchmarks does Solar Pro 4 cover on BenchLM?

Solar Pro 4 currently has 10 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Inkling 2 Small vs Inkling-Small](/compare/inkling-2-small-vs-inkling-small)
- [Solar Pro 4 vs Inkling-Small](/compare/inkling-small-vs-solar-pro-4)
- [Inkling 2 Small vs Inkling](/compare/inkling-vs-inkling-2-small)
- [Solar Pro 4 vs Inkling](/compare/inkling-vs-solar-pro-4)

## Explore More

- [Inkling 2 Small profile](/models/inkling-2-small)
- [Solar Pro 4 profile](/models/solar-pro-4)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)