# Inkling-Small vs LongCat-2.5

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

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

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Inkling-Small if you want the stronger benchmark profile. LongCat-2.5 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Inkling-Small leads overall 49.89 to 0.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 64.7% and 88.4%.
- LongCat-2.5 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Inkling-Small | LongCat-2.5 |
|----------|----------|----------|
| Creator | Thinking Machines Lab | Meituan |
| Type | Open Weight | Open Weight |
| Reasoning | Hybrid | Hybrid |
| Context | 1M | 1M |
| Overall Score | 49.89 | null |
| Benchmarks Covered | 28 | 22 |
| Pricing (input/output) | $0.58 / $1.44 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Inkling-Small public-lane score: 35.9 (Supported · #83/132)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling-Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 64.7% | 88.4% | LongCat-2.5 |
| BrowseComp | 77.4% | 91.9% | LongCat-2.5 |
| MCP Atlas | 79.6% | 83.1% | LongCat-2.5 |
| Toolathlon-Verified | 54.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 55.1% | Coming soon | Coming soon |
| 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 |
| JobBench | Coming soon | 65.4% | 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-Small public-lane score: 37.2 (Supported · #79/158)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling-Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.2% | Coming soon | Coming soon |
| SWE-bench Pro | 55.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 64.7% | 88.4% | LongCat-2.5 |
| SciCode | 48.7% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.9% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.2% | Coming soon | Coming soon |
| ProgramBench | Coming soon | 25.5% | Coming soon |
| DeepSWE | Coming soon | 64.6% | 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-Small public-lane score: 43.7 (Supported · #70/157)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling-Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 40.1% | Coming soon | Coming soon |
| CritPt | 8.3% | Coming soon | Coming soon |
| ARC-AGI-1 | 84.00% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Inkling-Small public-lane score: 51.6 (Estimated · #51/67)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling-Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 74% | Coming soon | Coming soon |
| CharXiv | 81.3% | 90.2% | LongCat-2.5 |
| CharXiv w/o tools | 77.4% | 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-Small public-lane score: 50.6 (Supported · #76/179)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling-Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.5% | Coming soon | Coming soon |
| GPQA-D | 89.5% | Coming soon | Coming soon |
| HLE | 47.8% | Coming soon | Coming soon |
| HLE w/o tools | 31.6% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 83.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.6% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 77% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Inkling-Small public-lane score: 93.3 (#10/157)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling-Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 82.2% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Inkling-Small public-lane score: 65 (#5/12)
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Inkling-Small | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.5% | Coming soon | Coming soon |
| HMMT Feb 2026 | 90.2% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 46.316% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 17.073% | Coming soon | Coming soon |

## FAQ

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

Inkling-Small is ahead overall on BenchLM right now.

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

Inkling-Small currently has 28 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-Small vs Inkling 2 Small](/compare/inkling-2-small-vs-inkling-small)
- [LongCat-2.5 vs Inkling 2 Small](/compare/inkling-2-small-vs-longcat-2-5)
- [Inkling-Small vs Inkling](/compare/inkling-vs-inkling-small)
- [LongCat-2.5 vs Inkling](/compare/inkling-vs-longcat-2-5)

## Explore More

- [Inkling-Small profile](/models/inkling-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)