# GPT-5.5 vs Inkling 2 Small

> Side-by-side benchmark comparison for GPT-5.5 and Inkling 2 Small across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

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

## Quick Verdict

GPT-5.5 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GPT-5.5 has the higher overall point estimate 68.75 to 59.06. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 68 for GPT-5.5 and 86.1 for Inkling 2 Small.
- The biggest single benchmark swing is JobBench in Agentic, with scores of 42.7% and 70.5%.
- Inkling 2 Small is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | GPT-5.5 | Inkling 2 Small |
|----------|----------|----------|
| Creator | OpenAI | Thinking Machines Lab |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Hybrid |
| Context | 1M | 1M |
| Overall Score | 68.75 | 59.06 |
| Benchmarks Covered | 47 | 25 |
| Pricing (input/output) | $5.00 / $30.00 | $0.30 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Inkling 2 Small
- GPT-5.5 public-lane score: 59.2 (Supported · #31/131)
- Inkling 2 Small public-lane score: 59.9 (Supported · #26/131)

| Benchmark | GPT-5.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| LifeVal | 77.4% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 82% | Coming soon | Coming soon |
| CyberGym | 81.8% | Coming soon | Coming soon |
| BrowseComp | 84.4% | 90.2% | Inkling 2 Small |
| OSWorld-Verified | 78.7% | Coming soon | Coming soon |
| MCP Atlas | 75.3% | 85% | Inkling 2 Small |
| Toolathlon | 55.6% | Coming soon | Coming soon |
| τ²-bench results | 98% | Coming soon | Coming soon |
| Gert Labs | 72.93% | Coming soon | Coming soon |
| ResearchClawBench | 17.0% | Coming soon | Coming soon |
| OSWorld 2.0 | 13.0% | Coming soon | Coming soon |
| JobBench | 42.7% | 70.5% | Inkling 2 Small |
| ExploitGym | 13.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 76.4% | Coming soon | Coming soon |
| ApprenticeBench | 20% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.1% | Coming soon |
| DeepSearchQA | Coming soon | 90.9% | Coming soon |

### Coding

- Winner: GPT-5.5
- GPT-5.5 public-lane score: 62.4 (Supported · #15/157)
- Inkling 2 Small public-lane score: 59.7 (Supported · #20/157)

| Benchmark | GPT-5.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 58.6% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 82.0% | Coming soon | Coming soon |
| Vibe Code Bench | 69.85% | Coming soon | Coming soon |
| React Native Evals | 84.7% | Coming soon | Coming soon |
| cursorBench31 | 59.2% | Coming soon | Coming soon |
| CursorBench 3.2 | 58.4% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 43.0% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.3% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.6% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 27.2% | Coming soon | Coming soon |
| FrontierCode 2.0 | 22.6% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 82.2% | 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: Not comparable
- GPT-5.5 public-lane score: 68 (#15/25)
- Inkling 2 Small public-lane score: 86.1 (Unranked · 2 rankable rows)

| Benchmark | GPT-5.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| BioBasicsBench | 35.4% | Coming soon | Coming soon |
| MRCR v2 64K-128K | 83.1% | Coming soon | Coming soon |
| MRCR v2 128K-256K | 87.5% | Coming soon | Coming soon |
| ARC-AGI-2 | 85% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.4% | Coming soon | Coming soon |
| ARC-AGI-1 | 95.00% | Coming soon | Coming soon |
| LongBench v2 | Coming soon | 70.6% | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.5 public-lane score: 73.9 (#27/59)
- Inkling 2 Small public-lane score: 86.6 (#12/59)

| Benchmark | GPT-5.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 93.35% | Coming soon | Coming soon |
| ParseBench | 66.42% | Coming soon | Coming soon |
| MMMU-Pro | 81.2% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 83.2% | Coming soon | Coming soon |
| OfficeQA Pro | 54.1% | Coming soon | Coming soon |
| 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: Directional only
- GPT-5.5 public-lane score: 71.3 (Supported · #14/178)
- Inkling 2 Small public-lane score: 60.4 (Estimated · #46/178)

| Benchmark | GPT-5.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 93.6% | 93% | GPT-5.5 |
| GPQA-D | 93.6% | 93.0% | GPT-5.5 |
| HLE | 52.2% | Coming soon | Coming soon |
| HLE w/o tools | 41.4% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 93.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 88.1% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- GPT-5.5 public-lane score: 93.3 (#9/157)
- Inkling 2 Small public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GPT-5.5 public-lane score: 87.7 (Unranked · 3 rankable rows)
- Inkling 2 Small public-lane score: 85.9 (Unranked · 2 rankable rows)

| Benchmark | GPT-5.5 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath (legacy) | 51.7% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 85.263% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 72.500% | Coming soon | Coming soon |
| HMMT Feb 2026 | Coming soon | 95.8% | Coming soon |
| Apex | Coming soon | 63.5% | Coming soon |

## FAQ

### Which is better overall, GPT-5.5 or Inkling 2 Small?

GPT-5.5 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between GPT-5.5 and Inkling 2 Small?

The widest category gap is in reasoning, where the averages are 68 for GPT-5.5 and 86.1 for Inkling 2 Small.

### How many benchmarks does GPT-5.5 cover on BenchLM?

GPT-5.5 currently has 47 sourced benchmark scores on BenchLM.

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

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

## Related Comparisons

- [GPT-5.5 vs GPT-5.5 Pro](/compare/gpt-5-5-vs-gpt-5-5-pro)
- [Inkling 2 Small vs GPT-5.5 Pro](/compare/gpt-5-5-pro-vs-inkling-2-small)
- [GPT-5.5 vs Inkling-Small](/compare/gpt-5-5-vs-inkling-small)
- [Inkling 2 Small vs Inkling-Small](/compare/inkling-2-small-vs-inkling-small)

## Explore More

- [GPT-5.5 profile](/models/gpt-5-5)
- [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)