GPT-5vsGPT-4.5
Across 3 shared benchmarks, GPT-5 leads overall: GPT-5 wins 3, GPT-4.5 wins 0, with 0 ties and an average score difference of +128.
GPT-53 wins(100%)(0%)0 winsGPT-4.5
Benchmark scores
Grouped by capability, sorted by largest gap within each. 3 shared benchmarks.
Coding and Software Engineer
GPT-5 1/1| Benchmark | GPT-5 | GPT-4.5 | Diff |
|---|---|---|---|
| LiveCodeBench | 55.80149 / 250Normal (No Tools) | 46.40178 / 250Normal (No Tools) | +9.40 |
General Evaluation
GPT-5 1/1| Benchmark | GPT-5 | GPT-4.5 | Diff |
|---|---|---|---|
| GPQA Diamond | 77.80257 / 462Normal (No Tools) | 71.40308 / 462Normal (No Tools) | +6.40 |
Writing and Creative Capabilities
GPT-5 1/1| Benchmark | GPT-5 | GPT-4.5 | Diff |
|---|---|---|---|
| Creative Writing | 1,62436 / 106Normal (No Tools) | 1,25577 / 106Normal (No Tools) | +368.20 |
Specs
| Field | GPT-5 | GPT-4.5 |
|---|---|---|
| Publisher | OpenAI | OpenAI |
| Release date | 2025-08-07 | 2025-02-28 |
| Model type | Foundation model | Chat model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 400K | 128K |
| Max output | 128K | Not available |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | GPT-5 | GPT-4.5 |
|---|---|---|
| Text input | $1.25 / 1M tokens | Not public |
| Text output | $10 / 1M tokens | Not public |
| Cache read | $0.125 / 1M tokens | Not public |
| Cache write | $0 / 1M tokens | Not public |
One or both models have incomplete public pricing.
Summary
- GPT-5leads in:Coding and Software Engineer (1/1), General Evaluation (1/1), Writing and Creative Capabilities (1/1)
On average across the 3 shared benchmarks, GPT-5 scores 128 higher.
Largest single-benchmark gap: Creative Writing — GPT-5 1,624 vs GPT-4.5 1,255 (+368.20).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.