# GPT-5.2 vs Inkling-Small

> Side-by-side benchmark comparison for GPT-5.2 and Inkling-Small across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-vs-inkling-small
- Last updated: September 10, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick GPT-5.2 if you want the stronger benchmark profile. Inkling-Small only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.2 leads overall 64.88 to 59.25.
- The clearest category separation is in mathematics, where the averages are 57.5 for GPT-5.2 and 76.9 for Inkling-Small.
- The biggest single benchmark swing is ARC-AGI-2 in Reasoning, with scores of 52.9% and 40.1%.
- Inkling-Small is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Inkling-Small also has the larger context window at 1M.

## Model Snapshot

| Property | GPT-5.2 | Inkling-Small |
|----------|----------|----------|
| Creator | OpenAI | Thinking Machines Lab |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 400K | 1M |
| Overall Score | 64.88 | 59.25 |
| Benchmarks Covered | 15 | 25 |
| Pricing (input/output) | $1.75 / $14.00 | $0.58 / $1.44 |

## Category Breakdown

### Agentic

- Winner: GPT-5.2
- GPT-5.2 public-lane score: 42.9 (Supported · #104/152)
- Inkling-Small public-lane score: 36.9 (Supported · #128/152)

| Benchmark | GPT-5.2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | 65.8% | 77.4% | Inkling-Small |
| OSWorld-Verified | 47.3% | Coming soon | Coming soon |
| Gert Labs | 46.54% | Coming soon | Coming soon |
| JobBench | 34.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 64.7% | Coming soon |
| MCP Atlas | Coming soon | 79.6% | Coming soon |
| Toolathlon-Verified | Coming soon | 54.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 55.1% | Coming soon |

### Coding

- Winner: GPT-5.2
- GPT-5.2 public-lane score: 46.4 (Supported · #81/151)
- Inkling-Small public-lane score: 43.8 (Supported · #97/151)

| Benchmark | GPT-5.2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80% | 80.2% | Inkling-Small |
| SWE-bench Pro | 55.6% | 55.9% | Inkling-Small |
| Vibe Code Bench | 53.50% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 64.7% | Coming soon |
| SciCode | Coming soon | 48.7% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.9% | Coming soon |
| SWE-bench (Vals) | Coming soon | 82.2% | Coming soon |

### Multimodal & Grounded

- Winner: GPT-5.2
- GPT-5.2 public-lane score: 66.3 (#23/48)
- Inkling-Small public-lane score: 48.8 (#39/48)

| Benchmark | GPT-5.2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 79.5% | 74% | GPT-5.2 |
| MathVision | 83.0% | Coming soon | Coming soon |
| CharXiv | 82.1% | 81.3% | GPT-5.2 |
| V* | 75.9% | Coming soon | Coming soon |
| CharXiv w/o tools | Coming soon | 77.4% | Coming soon |

### Reasoning

- Winner: Coming soon
- GPT-5.2 public-lane score: 53.7 (Unranked · 3 rankable rows)
- Inkling-Small public-lane score: 42.7 (Unranked · 3 rankable rows)

| Benchmark | GPT-5.2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 52.9% | 40.1% | GPT-5.2 |
| CritPt | Coming soon | 8.3% | Coming soon |

### Knowledge

- Winner: GPT-5.2
- GPT-5.2 public-lane score: 61.7 (Supported · #30/183)
- Inkling-Small public-lane score: 56.5 (Supported · #46/183)

| Benchmark | GPT-5.2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.4% | 89.5% | GPT-5.2 |
| GPQA-D | Coming soon | 89.5% | Coming soon |
| HLE | Coming soon | 47.8% | Coming soon |
| HLE w/o tools | Coming soon | 31.6% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 83.6% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 85.6% | Coming soon |

### Instruction Following

- Winner: Coming soon
- GPT-5.2 public-lane score: 92.6 (#14/123)
- Inkling-Small public-lane score: 89.6 (#25/123)

| Benchmark | GPT-5.2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 82.2% | Coming soon |

### Mathematics

- Winner: Coming soon
- GPT-5.2 public-lane score: 57.5 (Unranked · 2 rankable rows)
- Inkling-Small public-lane score: 76.9 (Unranked · 2 rankable rows)

| Benchmark | GPT-5.2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 40.700% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 18.800% | Coming soon | Coming soon |
| AIME26 | Coming soon | 95.5% | Coming soon |
| HMMT Feb 2026 | Coming soon | 90.2% | Coming soon |

## FAQ

### Which is better overall, GPT-5.2 or Inkling-Small?

GPT-5.2 is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-5.2 and Inkling-Small?

The widest category gap is in mathematics, where the averages are 57.5 for GPT-5.2 and 76.9 for Inkling-Small.

### How many benchmarks does GPT-5.2 cover on BenchLM?

GPT-5.2 currently has 15 sourced benchmark scores on BenchLM.

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

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

## Related Comparisons

- [GPT-5.2 vs GPT-5.2 Pro](/compare/gpt-5-2-vs-gpt-5-2-pro)
- [Inkling-Small vs GPT-5.2 Pro](/compare/gpt-5-2-pro-vs-inkling-small)
- [GPT-5.2 vs GPT-5.2 Instant](/compare/gpt-5-2-vs-gpt-5-2-instant)
- [Inkling-Small vs GPT-5.2 Instant](/compare/gpt-5-2-instant-vs-inkling-small)

## Explore More

- [GPT-5.2 profile](/models/gpt-5-2)
- [Inkling-Small profile](/models/inkling-small)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)