# Grok 4.20 vs Inkling 2 Small

> Side-by-side benchmark comparison for Grok 4.20 and Inkling 2 Small across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-20-beta-vs-inkling-2-small
- Last updated: November 7, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Inkling 2 Small leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Inkling 2 Small has the higher overall point estimate 59.06 to 56.41. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 43.2 for Grok 4.20 and 86.1 for Inkling 2 Small.
- The biggest single benchmark swing is DeepSearchQA in Agentic, with scores of 62.8% and 90.9%.
- Inkling 2 Small is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.20 also has the larger context window at 2M.

## Model Snapshot

| Property | Grok 4.20 | Inkling 2 Small |
|----------|----------|----------|
| Creator | xAI | Thinking Machines Lab |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Hybrid |
| Context | 2M | 1M |
| Overall Score | 56.41 | 59.06 |
| Benchmarks Covered | 24 | 25 |
| Pricing (input/output) | $1.25 / $2.50 | $0.30 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Inkling 2 Small
- Grok 4.20 public-lane score: 25.3 (Supported · #110/131)
- Inkling 2 Small public-lane score: 59.9 (Supported · #26/131)

| Benchmark | Grok 4.20 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 47.1% | Coming soon | Coming soon |
| DeepSearchQA | 62.8% | 90.9% | Inkling 2 Small |
| Gert Labs | 38.36% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 44.2% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.1% | Coming soon |
| BrowseComp | Coming soon | 90.2% | Coming soon |
| MCP Atlas | Coming soon | 85% | Coming soon |
| JobBench | Coming soon | 70.5% | Coming soon |

### Coding

- Winner: Inkling 2 Small
- Grok 4.20 public-lane score: 22.1 (Supported · #132/157)
- Inkling 2 Small public-lane score: 59.7 (Supported · #20/157)

| Benchmark | Grok 4.20 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 74.2% | Coming soon | Coming soon |
| SWE-bench Verified | 76.7% | 82.2% | Inkling 2 Small |
| SWE-bench Pro | 51.8% | Coming soon | Coming soon |
| Vibe Code Bench | 4.06% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 84.3% | Coming soon | Coming soon |
| SWE-bench (Vals) | 72.2% | Coming soon | Coming soon |
| SWE Multilingual | Coming soon | 81.2% | Coming soon |
| sweMarathon | Coming soon | 38.8% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.1% | Coming soon |
| DeepSWE | Coming soon | 72.1% | Coming soon |
| PostTrainBench v1.2 | Coming soon | 31.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- Grok 4.20 public-lane score: 43.2 (Unranked · 2 rankable rows)
- Inkling 2 Small public-lane score: 86.1 (Unranked · 2 rankable rows)

| Benchmark | Grok 4.20 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 53.3% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.1% | Coming soon | Coming soon |
| LongBench v2 | Coming soon | 70.6% | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Grok 4.20 public-lane score: 52.9 (#51/59)
- Inkling 2 Small public-lane score: 86.6 (#12/59)

| Benchmark | Grok 4.20 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 75.2% | Coming soon | Coming soon |
| CharXiv | 60.9% | 87.7% | Inkling 2 Small |
| ERQA | 54.1% | Coming soon | Coming soon |
| SimpleVQA | 57.4% | Coming soon | Coming soon |
| MedXpertQA (MM) | 65.8% | Coming soon | Coming soon |
| CharXiv w/o tools | Coming soon | 85.6% | Coming soon |
| Chartography (no tools) | Coming soon | 36.7% | Coming soon |
| Chartography (tools) | Coming soon | 80.4% | Coming soon |
| BabyVision | Coming soon | 68.6% | Coming soon |
| BabyVision w/ Python | Coming soon | 93.7% | Coming soon |
| ScreenSpot Pro | Coming soon | 83.8% | Coming soon |
| PerceptionBench | Coming soon | 64.7% | Coming soon |
| MathVision | Coming soon | 92.8% | Coming soon |

### Knowledge

- Winner: Directional only
- Grok 4.20 public-lane score: 52.4 (Supported · #71/178)
- Inkling 2 Small public-lane score: 60.4 (Estimated · #46/178)

| Benchmark | Grok 4.20 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 88.5% | 93.0% | Inkling 2 Small |
| HLE w/o tools | 31.6% | Coming soon | Coming soon |
| HealthBench Hard | 20.3% | Coming soon | Coming soon |
| MedXpertQA (Text) | 50.2% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 88.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.3% | Coming soon | Coming soon |
| GPQA | Coming soon | 93% | Coming soon |

### Mathematics

- Winner: Not comparable
- Grok 4.20 public-lane score: Coming soon
- Inkling 2 Small public-lane score: 85.9 (Unranked · 2 rankable rows)

| Benchmark | Grok 4.20 | Inkling 2 Small | Winner |
|-----------|-----------|-----------|--------|
| HMMT Feb 2026 | Coming soon | 95.8% | Coming soon |
| Apex | Coming soon | 63.5% | Coming soon |

## FAQ

### Which is better overall, Grok 4.20 or Inkling 2 Small?

Inkling 2 Small has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Grok 4.20 and Inkling 2 Small?

The widest category gap is in reasoning, where the averages are 43.2 for Grok 4.20 and 86.1 for Inkling 2 Small.

### How many benchmarks does Grok 4.20 cover on BenchLM?

Grok 4.20 currently has 24 sourced benchmark scores on BenchLM.

### How many benchmarks does Inkling 2 Small cover on BenchLM?

Inkling 2 Small currently has 25 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Grok 4.20 vs Grok 4.20 Multi-agent](/compare/grok-4-20-beta-vs-grok-4-20-multi-agent-beta)
- [Inkling 2 Small vs Grok 4.20 Multi-agent](/compare/grok-4-20-multi-agent-beta-vs-inkling-2-small)
- [Grok 4.20 vs Inkling-Small](/compare/grok-4-20-beta-vs-inkling-small)
- [Inkling 2 Small vs Inkling-Small](/compare/inkling-2-small-vs-inkling-small)

## Explore More

- [Grok 4.20 profile](/models/grok-4-20-beta)
- [Inkling 2 Small profile](/models/inkling-2-small)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)