# GPT-4.5 vs Inkling

> Side-by-side benchmark comparison for GPT-4.5 and Inkling across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-4.5 and Inkling share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Inkling has the lower published output-token price.
- Inkling has the larger published context window at 1M.

## Model Snapshot

| Property | GPT-4.5 | Inkling |
|----------|----------|----------|
| Creator | OpenAI | Thinking Machines Lab |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Hybrid |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | null | 52.13 |
| Benchmarks Covered | 6 | 24 |
| Pricing (input/output) | $75.00 / $150.00 | $1.87 / $4.68 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: 36.2 (Supported · #72/124)

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | Coming soon | 63.8% | Coming soon |
| BrowseComp | Coming soon | 77.1% | Coming soon |
| MCP Atlas | Coming soon | 74.1% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 47.6% | Coming soon |
| CWE-bench v1 | Coming soon | 37.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: 34 (Supported · #80/149)

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.6% | Coming soon | Coming soon |
| 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 |
| LiveCodeBench (Vals) | Coming soon | 85.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 77.6% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: 79 (#14/29)

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| DROP | 83.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: 67.5 (#35/54)

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 73.5% | Coming soon |
| CharXiv | Coming soon | 82% | Coming soon |
| CharXiv w/o tools | Coming soon | 78.1% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: 54.5 (Supported · #62/181)

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 90.8% | Coming soon | Coming soon |
| GPQA | 69.5% | 87.9% | Inkling |
| SimpleQA | 62.5% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 87.9% | Coming soon |
| HLE | Coming soon | 46% | Coming soon |
| HLE w/o tools | Coming soon | 30% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 87.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.3% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: Coming soon

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 86.9% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: 87.6 (#35/128)

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.8% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- Inkling public-lane score: 58.3 (#11/12)

| Benchmark | GPT-4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 97.1% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 33.333% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.878% | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-4.5 and Inkling?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [GPT-4.5 vs Inkling-Small](/compare/gpt-4-5-vs-inkling-small)
- [Inkling vs Inkling-Small](/compare/inkling-vs-inkling-small)
- [GPT-4.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gpt-4-5)
- [Inkling vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-inkling)

## Explore More

- [GPT-4.5 profile](/models/gpt-4-5)
- [Inkling profile](/models/inkling)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)