# GPT-5.4 vs Inkling

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

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

- Shared sourced benchmarks: 11
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick GPT-5.4 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 leads overall 66.46 to 52.13.
- The clearest category separation is in mathematics, where the averages are 82 for GPT-5.4 and 58.3 for Inkling.
- The biggest single benchmark swing is FrontierMath v2 (Tiers 1-3) in Mathematics, with scores of 78.596% and 33.333%.
- Inkling is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.4 also has the larger context window at 1.05M.

## Model Snapshot

| Property | GPT-5.4 | Inkling |
|----------|----------|----------|
| Creator | OpenAI | Thinking Machines Lab |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 1.05M | 1M |
| Overall Score | 66.46 | 52.13 |
| Benchmarks Covered | 41 | 24 |
| Pricing (input/output) | $2.50 / $15.00 | $1.87 / $4.68 |

## Category Breakdown

### Agentic

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 51.3 (Supported · #43/124)
- Inkling public-lane score: 36.2 (Supported · #72/124)

| Benchmark | GPT-5.4 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 75.1% | Coming soon | Coming soon |
| CyberGym | 79.0% | Coming soon | Coming soon |
| BrowseComp | 82.7% | 77.1% | GPT-5.4 |
| OSWorld-Verified | 75% | Coming soon | Coming soon |
| MCP Atlas | 70.6% | 74.1% | Inkling |
| Toolathlon | 54.6% | Coming soon | Coming soon |
| τ²-bench results | 98.9% | Coming soon | Coming soon |
| Claw-Eval | 60.3% | Coming soon | Coming soon |
| DeepSearchQA | 73.6% | Coming soon | Coming soon |
| Gert Labs | 64.89% | Coming soon | Coming soon |
| ResearchClawBench | 15.3% | Coming soon | Coming soon |
| JobBench | 38.9% | Coming soon | Coming soon |
| ExploitGym | 6.0% | Coming soon | Coming soon |
| ApprenticeBench | 11% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 63.8% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 47.6% | Coming soon |
| CWE-bench v1 | Coming soon | 37.0% | Coming soon |

### Coding

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 48 (Supported · #46/149)
- Inkling public-lane score: 34 (Supported · #80/149)

| Benchmark | GPT-5.4 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 87.5% | Coming soon | Coming soon |
| SWE-bench Pro | 57.7% | 54.3% | GPT-5.4 |
| React Native Evals | 85.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 75.1% | Coming soon | Coming soon |
| Vibe Code Bench | 67.42% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 19.0% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 77.6% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 63.8% | Coming soon |
| FrontierSWE v2 | Coming soon | 4.1% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 77.6% | Coming soon |

### Reasoning

- Winner: Directional only
- GPT-5.4 public-lane score: 64.2 (#24/29)
- Inkling public-lane score: 79 (#14/29)

| Benchmark | GPT-5.4 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 74.0% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.2% | Coming soon | Coming soon |
| ARC-AGI-1 | 93.67% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.4 public-lane score: 73.1 (#30/54)
- Inkling public-lane score: 67.5 (#35/54)

| Benchmark | GPT-5.4 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 81.2% | 73.5% | GPT-5.4 |
| OfficeQA Pro | 53.2% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 82.1% | Coming soon | Coming soon |
| CharXiv | 82.8% | 82% | GPT-5.4 |
| ERQA | 65.4% | Coming soon | Coming soon |
| SimpleVQA | 61.1% | Coming soon | Coming soon |
| ScreenSpot Pro | 85.4% | Coming soon | Coming soon |
| ZeroBench | 41.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 77.1% | Coming soon | Coming soon |
| CharXiv w/o tools | Coming soon | 78.1% | Coming soon |

### Knowledge

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 68.8 (Supported · #20/181)
- Inkling public-lane score: 54.5 (Supported · #62/181)

| Benchmark | GPT-5.4 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | 87.9% | GPT-5.4 |
| HLE | 52.1% | 46% | GPT-5.4 |
| HLE w/o tools | 39.8% | 30% | GPT-5.4 |
| GPQA-D | 92.8% | 87.9% | GPT-5.4 |
| HealthBench Hard | 40.1% | Coming soon | Coming soon |
| MedXpertQA (Text) | 59.6% | Coming soon | Coming soon |
| HealthBench Professional | 48.1% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 87.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.3% | Coming soon |

### Instruction Following

- Winner: Directional only
- GPT-5.4 public-lane score: 90.7 (#23/128)
- Inkling public-lane score: 87.6 (#35/128)

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

### Mathematics

- Winner: Not comparable
- GPT-5.4 public-lane score: 82 (Unranked · 2 rankable rows)
- Inkling public-lane score: 58.3 (#11/12)

| Benchmark | GPT-5.4 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 78.596% | 33.333% | GPT-5.4 |
| FrontierMath v2 (Tier 4) | 49.000% | 4.878% | GPT-5.4 |
| AIME26 | Coming soon | 97.1% | Coming soon |

## FAQ

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

GPT-5.4 is ahead overall on BenchLM right now.

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

The widest category gap is in mathematics, where the averages are 82 for GPT-5.4 and 58.3 for Inkling.

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

GPT-5.4 currently has 41 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 vs GPT-5.4 Pro](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [Inkling vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-inkling)
- [GPT-5.4 vs GPT-5.4 mini](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [Inkling vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-inkling)

## Explore More

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