# Grok 4.5 vs Inkling

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

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

- Shared sourced benchmarks: 10
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Grok 4.5 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

- Grok 4.5 leads overall 62.93 to 52.13.
- The clearest category separation is in reasoning, where the averages are 54.1 for Grok 4.5 and 79 for Inkling.
- The biggest single benchmark swing is FrontierMath v2 (Tiers 1-3) in Mathematics, with scores of 57.193% and 33.333%.
- Inkling 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 | Grok 4.5 | Inkling |
|----------|----------|----------|
| Creator | xAI | Thinking Machines Lab |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 500K | 1M |
| Overall Score | 62.93 | 52.13 |
| Benchmarks Covered | 19 | 24 |
| Pricing (input/output) | $2.00 / $6.00 | $1.87 / $4.68 |

## Category Breakdown

### Agentic

- Winner: Grok 4.5
- Grok 4.5 public-lane score: 57.5 (Supported · #31/124)
- Inkling public-lane score: 36.2 (Supported · #72/124)

| Benchmark | Grok 4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 15.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 83.3% | 63.8% | Grok 4.5 |
| deepSwe | 53% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 67.8% | 47.6% | Grok 4.5 |
| BrowseComp | Coming soon | 77.1% | Coming soon |
| MCP Atlas | Coming soon | 74.1% | Coming soon |
| CWE-bench v1 | Coming soon | 37.0% | Coming soon |

### Coding

- Winner: Grok 4.5
- Grok 4.5 public-lane score: 56.1 (Supported · #28/149)
- Inkling public-lane score: 34 (Supported · #80/149)

| Benchmark | Grok 4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 64.7% | 54.3% | Grok 4.5 |
| SWE Multilingual | 78% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 83.3% | 63.8% | Grok 4.5 |
| CursorBench 3.2 | 66.7% | Coming soon | Coming soon |
| VulcanBench v3 | 89.9% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.4% | 85.5% | Grok 4.5 |
| SWE-bench (Vals) | 86.6% | 77.6% | Grok 4.5 |
| PostTrainBench v1.1 | 23.4% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 77.6% | Coming soon |
| FrontierSWE v2 | Coming soon | 4.1% | Coming soon |

### Reasoning

- Winner: Directional only
- Grok 4.5 public-lane score: 54.1 (#29/29)
- Inkling public-lane score: 79 (#14/29)

| Benchmark | Grok 4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 52.6% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.3% | Coming soon | Coming soon |
| ARC-AGI-1 | 85.67% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Grok 4.5 public-lane score: 82.9 (Unranked · 1 rankable row)
- Inkling public-lane score: 67.5 (#35/54)

| Benchmark | Grok 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: Grok 4.5
- Grok 4.5 public-lane score: 67.2 (Supported · #27/181)
- Inkling public-lane score: 54.5 (Supported · #62/181)

| Benchmark | Grok 4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 92.9% | 87.1% | Grok 4.5 |
| MMLU-Pro (Vals) | 89.2% | 86.3% | Grok 4.5 |
| GPQA | Coming soon | 87.9% | 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 |

### Instruction Following

- Winner: Not comparable
- Grok 4.5 public-lane score: Coming soon
- Inkling public-lane score: 87.6 (#35/128)

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

### Mathematics

- Winner: Not comparable
- Grok 4.5 public-lane score: 62.9 (Unranked · 2 rankable rows)
- Inkling public-lane score: 58.3 (#11/12)

| Benchmark | Grok 4.5 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 57.193% | 33.333% | Grok 4.5 |
| FrontierMath v2 (Tier 4) | 24.390% | 4.878% | Grok 4.5 |
| AIME26 | Coming soon | 97.1% | Coming soon |

## FAQ

### Which is better overall, Grok 4.5 or Inkling?

Grok 4.5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Grok 4.5 and Inkling?

The widest category gap is in reasoning, where the averages are 54.1 for Grok 4.5 and 79 for Inkling.

### How many benchmarks does Grok 4.5 cover on BenchLM?

Grok 4.5 currently has 19 sourced benchmark scores on BenchLM.

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

Inkling currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

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

## Explore More

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