# Inkling 2 Small vs LongCat-2.5

> Side-by-side benchmark comparison for Inkling 2 Small and LongCat-2.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/inkling-2-small-vs-longcat-2-5
- Last updated: November 9, 2026

- Shared sourced benchmarks: 7
- 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 57.43 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 72.1% and 64.6%.
- Inkling 2 Small is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Inkling 2 Small | LongCat-2.5 |
|----------|----------|----------|
| Creator | Thinking Machines Lab | Meituan |
| Type | Proprietary | Open Weight |
| Reasoning | Hybrid | Hybrid |
| Context | 1M | 1M |
| Overall Score | 57.43 | null |
| Benchmarks Covered | 25 | 22 |
| 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 · #28/132)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 85.1% | 88.4% | LongCat-2.5 |
| BrowseComp | 90.2% | 91.9% | LongCat-2.5 |
| DeepSearchQA | 90.9% | Coming soon | Coming soon |
| MCP Atlas | 85% | 83.1% | Inkling 2 Small |
| JobBench | 70.5% | 65.4% | Inkling 2 Small |
| Terminal-Bench 4.0 | Coming soon | 38.50% | Coming soon |
| AutomationBench | Coming soon | 51.8% | Coming soon |
| HLE w/ tools | Coming soon | 63.1% | Coming soon |
| Agents' Last Exam | Coming soon | 38.5% | Coming soon |
| skillsBench | Coming soon | 63.3% | Coming soon |
| SpreadsheetBench 2 | Coming soon | 34.9% | Coming soon |
| Claw-Eval | Coming soon | 78.3% | Coming soon |

### Coding

- Winner: Not comparable
- Inkling 2 Small public-lane score: 59.2 (Supported · #21/158)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 82.2% | Coming soon | Coming soon |
| SWE Multilingual | 81.2% | Coming soon | Coming soon |
| sweMarathon | 38.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 85.1% | 88.4% | LongCat-2.5 |
| DeepSWE | 72.1% | 64.6% | Inkling 2 Small |
| PostTrainBench v1.2 | 31.9% | Coming soon | Coming soon |
| ProgramBench | Coming soon | 25.5% | Coming soon |
| PaperBench | Coming soon | 82.1% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 58.3% | Coming soon |
| NL2Repo | Coming soon | 60.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Inkling 2 Small public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 70.6% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Inkling 2 Small public-lane score: 63 (Estimated · #31/67)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 87.7% | 90.2% | LongCat-2.5 |
| 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 |
| Vision2Web | Coming soon | 78.6% | Coming soon |
| MathVision w/ Python | Coming soon | 96.5% | Coming soon |
| Video-MME | Coming soon | 85.2% | Coming soon |

### Knowledge

- Winner: Not comparable
- Inkling 2 Small public-lane score: 59.5 (Estimated · #48/179)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 93% | Coming soon | Coming soon |
| GPQA-D | 93.0% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 77% | Coming soon |

### Mathematics

- Winner: Not comparable
- Inkling 2 Small public-lane score: 85.9 (Unranked · 2 rankable rows)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling 2 Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| HMMT Feb 2026 | 95.8% | Coming soon | Coming soon |
| Apex | 63.5% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Inkling 2 Small or LongCat-2.5?

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 LongCat-2.5 cover on BenchLM?

LongCat-2.5 currently has 22 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Inkling 2 Small vs Inkling-Small](/compare/inkling-2-small-vs-inkling-small)
- [LongCat-2.5 vs Inkling-Small](/compare/inkling-small-vs-longcat-2-5)
- [Inkling 2 Small vs Inkling](/compare/inkling-vs-inkling-2-small)
- [LongCat-2.5 vs Inkling](/compare/inkling-vs-longcat-2-5)

## Explore More

- [Inkling 2 Small profile](/models/inkling-2-small)
- [LongCat-2.5 profile](/models/longcat-2-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)