# GPT-4.5 vs Granite-4.0-H-1B

> Side-by-side benchmark comparison for GPT-4.5 and Granite-4.0-H-1B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-4-5-vs-granite-4-0-h-1b
- Last updated: October 14, 2026

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

## Quick Verdict

GPT-4.5 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GPT-4.5 has the higher overall point estimate 69 to 28.94. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is MGSM in Multilingual, with scores of 86.9% and 27.5%.
- Granite-4.0-H-1B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | GPT-4.5 | Granite-4.0-H-1B |
|----------|----------|----------|
| Creator | OpenAI | IBM |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 128K | 128K |
| Overall Score | null | 28.94 |
| Benchmarks Covered | 6 | 7 |
| Pricing (input/output) | $75.00 / $150.00 | $0.00 / $0.00 |

## Category Breakdown

### Coding

- Winner: Not comparable
- GPT-4.5 public-lane score: Coming soon
- Granite-4.0-H-1B public-lane score: Coming soon

| Benchmark | GPT-4.5 | Granite-4.0-H-1B | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.6% | 73% | GPT-4.5 |

### Reasoning

- Winner: Not comparable
- GPT-4.5 public-lane score: Coming soon
- Granite-4.0-H-1B public-lane score: 30.7 (Unranked · 3 rankable rows)

| Benchmark | GPT-4.5 | Granite-4.0-H-1B | Winner |
|-----------|-----------|-----------|--------|
| DROP | 83.4% | Coming soon | Coming soon |
| BBH | Coming soon | 59.7% | Coming soon |

### Knowledge

- Winner: Not comparable
- GPT-4.5 public-lane score: Coming soon
- Granite-4.0-H-1B public-lane score: 19.6 (Supported · #177/181)

| Benchmark | GPT-4.5 | Granite-4.0-H-1B | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 90.8% | 59.7% | GPT-4.5 |
| GPQA | 69.5% | 29.7% | GPT-4.5 |
| SimpleQA | 62.5% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 32.9% | Coming soon |

### Multilingual

- Winner: Not comparable
- GPT-4.5 public-lane score: Coming soon
- Granite-4.0-H-1B public-lane score: Coming soon

| Benchmark | GPT-4.5 | Granite-4.0-H-1B | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 86.9% | 27.5% | GPT-4.5 |

### Instruction Following

- Winner: Not comparable
- GPT-4.5 public-lane score: Coming soon
- Granite-4.0-H-1B public-lane score: 28.8 (#120/128)

| Benchmark | GPT-4.5 | Granite-4.0-H-1B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 78.5% | Coming soon |

## FAQ

### Which is better overall, GPT-4.5 or Granite-4.0-H-1B?

GPT-4.5 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### How many benchmarks does GPT-4.5 cover on BenchLM?

GPT-4.5 currently has 6 sourced benchmark scores on BenchLM.

### How many benchmarks does Granite-4.0-H-1B cover on BenchLM?

Granite-4.0-H-1B currently has 7 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-4.5 vs Granite-4.0-1B](/compare/gpt-4-5-vs-granite-4-0-1b)
- [Granite-4.0-H-1B vs Granite-4.0-1B](/compare/granite-4-0-1b-vs-granite-4-0-h-1b)
- [GPT-4.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gpt-4-5)
- [Granite-4.0-H-1B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-granite-4-0-h-1b)

## Explore More

- [GPT-4.5 profile](/models/gpt-4-5)
- [Granite-4.0-H-1B profile](/models/granite-4-0-h-1b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)