# GPT-5.4 mini vs Inkling

> Side-by-side benchmark comparison for GPT-5.4 mini and Inkling across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-mini-vs-inkling
- Last updated: October 14, 2026

- Shared sourced benchmarks: 12
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick GPT-5.4 mini if you want the stronger benchmark profile. Inkling only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.4 mini leads overall 53.21 to 52.13.
- The clearest category separation is in reasoning, where the averages are 43.7 for GPT-5.4 mini and 79 for Inkling.
- The biggest single benchmark swing is FrontierMath v2 (Tiers 1-3) in Mathematics, with scores of 51.228% and 33.333%.
- GPT-5.4 mini is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Inkling also has the larger context window at 1M.

## Model Snapshot

| Property | GPT-5.4 mini | Inkling |
|----------|----------|----------|
| Creator | OpenAI | Thinking Machines Lab |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 400K | 1M |
| Overall Score | 53.21 | 52.13 |
| Benchmarks Covered | 22 | 24 |
| Pricing (input/output) | $0.75 / $4.50 | $1.87 / $4.68 |

## Category Breakdown

### Agentic

- Winner: Inkling
- GPT-5.4 mini public-lane score: 34.7 (Supported · #76/124)
- Inkling public-lane score: 36.2 (Supported · #72/124)

| Benchmark | GPT-5.4 mini | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 60% | Coming soon | Coming soon |
| OSWorld-Verified | 72.1% | Coming soon | Coming soon |
| MCP Atlas | 57.7% | 74.1% | Inkling |
| Toolathlon | 42.9% | Coming soon | Coming soon |
| τ²-bench results | 93.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 54.7% | 47.6% | GPT-5.4 mini |
| Terminal-Bench 2.1 | Coming soon | 63.8% | Coming soon |
| BrowseComp | Coming soon | 77.1% | Coming soon |
| CWE-bench v1 | Coming soon | 37.0% | Coming soon |

### Coding

- Winner: GPT-5.4 mini
- GPT-5.4 mini public-lane score: 35.8 (Supported · #75/149)
- Inkling public-lane score: 34 (Supported · #80/149)

| Benchmark | GPT-5.4 mini | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 60.0% | Coming soon | Coming soon |
| Vibe Code Bench | 47.97% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 27.0% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 81.5% | 85.5% | Inkling |
| SWE-bench (Vals) | 73.0% | 77.6% | Inkling |
| SWE-bench Verified | Coming soon | 77.6% | Coming soon |
| SWE-bench Pro | Coming soon | 54.3% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 63.8% | Coming soon |
| FrontierSWE v2 | Coming soon | 4.1% | Coming soon |

### Reasoning

- Winner: Not comparable
- GPT-5.4 mini public-lane score: 43.7 (Unranked · 4 rankable rows)
- Inkling public-lane score: 79 (#14/29)

| Benchmark | GPT-5.4 mini | Inkling | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 63.70% | Coming soon | Coming soon |
| ARC-AGI-2 | 18.9% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.4 mini public-lane score: 73.8 (#28/54)
- Inkling public-lane score: 67.5 (#35/54)

| Benchmark | GPT-5.4 mini | Inkling | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 76.6% | 73.5% | GPT-5.4 mini |
| MMMU-Pro w/ Python | 78% | Coming soon | Coming soon |
| CharXiv | Coming soon | 82% | Coming soon |
| CharXiv w/o tools | Coming soon | 78.1% | Coming soon |

### Knowledge

- Winner: Inkling
- GPT-5.4 mini public-lane score: 51.3 (Supported · #73/181)
- Inkling public-lane score: 54.5 (Supported · #62/181)

| Benchmark | GPT-5.4 mini | Inkling | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 88% | 87.9% | GPT-5.4 mini |
| HLE | 41.5% | 46% | Inkling |
| HLE w/o tools | 28.2% | 30% | Inkling |
| GPQA Diamond (Vals) | 83.1% | 87.1% | Inkling |
| MMLU-Pro (Vals) | 84.6% | 86.3% | Inkling |
| GPQA-D | Coming soon | 87.9% | Coming soon |

### Instruction Following

- Winner: Directional only
- GPT-5.4 mini public-lane score: 89.9 (#27/128)
- Inkling public-lane score: 87.6 (#35/128)

| Benchmark | GPT-5.4 mini | Inkling | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.8% | Coming soon |

### Mathematics

- Winner: Not comparable
- GPT-5.4 mini public-lane score: 55.9 (Unranked · 2 rankable rows)
- Inkling public-lane score: 58.3 (#11/12)

| Benchmark | GPT-5.4 mini | Inkling | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 51.228% | 33.333% | GPT-5.4 mini |
| FrontierMath v2 (Tier 4) | 9.756% | 4.878% | GPT-5.4 mini |
| AIME26 | Coming soon | 97.1% | Coming soon |

## FAQ

### Which is better overall, GPT-5.4 mini or Inkling?

GPT-5.4 mini is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-5.4 mini and Inkling?

The widest category gap is in reasoning, where the averages are 43.7 for GPT-5.4 mini and 79 for Inkling.

### How many benchmarks does GPT-5.4 mini cover on BenchLM?

GPT-5.4 mini currently has 22 sourced benchmark scores on BenchLM.

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

Inkling currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-5.4 mini vs GPT-5.4 Pro](/compare/gpt-5-4-mini-vs-gpt-5-4-pro)
- [Inkling vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-inkling)
- [GPT-5.4 mini vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [Inkling vs GPT-5.4](/compare/gpt-5-4-vs-inkling)

## Explore More

- [GPT-5.4 mini profile](/models/gpt-5-4-mini)
- [Inkling profile](/models/inkling)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)