# GPT-4.5 vs GPT-6.1 Sol

> Side-by-side benchmark comparison for GPT-4.5 and GPT-6.1 Sol across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-4-5-vs-gpt-6-1-sol
- Last updated: October 14, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT-4.5 and GPT-6.1 Sol.

## Summary

- GPT-4.5 and GPT-6.1 Sol do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | GPT-4.5 | GPT-6.1 Sol |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 1.05M |
| Independent public score (not head-to-head) | null | 83.81 |
| Benchmarks Covered | 6 | 15 |
| Pricing (input/output) | $75.00 / $150.00 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- GPT-6.1 Sol public-lane score: 75.9 (Estimated · #5/124)

| Benchmark | GPT-4.5 | GPT-6.1 Sol | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | Coming soon | 36.1% | Coming soon |
| Terminal-Bench-Science 0.1 | Coming soon | 57.0% | Coming soon |
| ExploitGym | Coming soon | 35.1% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- GPT-6.1 Sol public-lane score: 70.9 (Supported · #8/148)

| Benchmark | GPT-4.5 | GPT-6.1 Sol | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.6% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 71.9% | Coming soon |
| Bug Hunt Bench | Coming soon | 44.3 fixes | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- GPT-6.1 Sol public-lane score: 90.5 (#2/29)

| Benchmark | GPT-4.5 | GPT-6.1 Sol | Winner |
|-----------|-----------|-----------|--------|
| DROP | 83.4% | Coming soon | Coming soon |
| ARC-AGI-1 | Coming soon | 96.50% | Coming soon |
| ARC-AGI-2 | Coming soon | 94.2% | Coming soon |
| ARC-AGI-3 | Coming soon | 52.7% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- GPT-6.1 Sol public-lane score: 87.3 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- GPT-6.1 Sol public-lane score: 85.5 (Supported · #4/181)

| Benchmark | GPT-4.5 | GPT-6.1 Sol | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 90.8% | Coming soon | Coming soon |
| GPQA | 69.5% | Coming soon | Coming soon |
| SimpleQA | 62.5% | Coming soon | Coming soon |
| HealthBench (raw) | Coming soon | 56.7% | Coming soon |
| HealthBench (length-adjusted) | Coming soon | 58.5% | Coming soon |
| HealthBench Professional | Coming soon | 64.2% | Coming soon |
| HealthBench Professional (raw) | Coming soon | 67.2% | Coming soon |
| HealthBench Hard | Coming soon | 36.2% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- GPT-6.1 Sol public-lane score: Coming soon

| Benchmark | GPT-4.5 | GPT-6.1 Sol | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 86.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- GPT-6.1 Sol public-lane score: 97.3 (Unranked · 2 rankable rows)

| Benchmark | GPT-4.5 | GPT-6.1 Sol | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 93.684% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 100.000% | Coming soon |

## FAQ

### Can I compare GPT-4.5 and GPT-6.1 Sol on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [GPT-4.5 vs GPT-6 Astra](/compare/gpt-4-5-vs-gpt-6-astra)
- [GPT-6.1 Sol vs GPT-6 Astra](/compare/gpt-6-1-sol-vs-gpt-6-astra)
- [GPT-4.5 vs GPT-6 Sol](/compare/gpt-4-5-vs-gpt-6-sol)
- [GPT-6.1 Sol vs GPT-6 Sol](/compare/gpt-6-1-sol-vs-gpt-6-sol)

## Explore More

- [GPT-4.5 profile](/models/gpt-4-5)
- [GPT-6.1 Sol profile](/models/gpt-6-1-sol)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)