# GPT-5.3-Codex-Spark benchmark scores

OpenAI · model · https://benchgap.net/model/gpt-5-3-codex-spark · data retrieved 2026-10-29

As of 2026-10-29, GPT-5.3-Codex-Spark (OpenAI) has measured scores on 1 benchmark and estimated scores on 12 more.

| Benchmark | Score | Source |
|---|---|---|
| [BrowseComp](https://benchgap.net/b/browsecomp/current.md) | 77.6% | estimated ± 11.3 pp, low confidence |
| [HLE w/ tools](https://benchgap.net/b/hlewithtools/current.md) | 53.7% | estimated ± 7.5 pp, low confidence |
| [ApprenticeBench](https://benchgap.net/b/apprenticebench/current.md) | 12.9% | estimated ± 12.5 pp, low confidence |
| [MazeBench](https://benchgap.net/b/mazebench/current.md) | 0.0% | measured |
| [CWE-Bench-AA](https://benchgap.net/b/aa-cwe-bench/current.md) | 44.0% | estimated ± 11.3 pp, low confidence |
| [GDP.pdf](https://benchgap.net/b/aa-gdp-pdf/current.md) | 21.0% | estimated ± 5.1 pp, low confidence |
| [CWE-bench v1](https://benchgap.net/b/cwe-bench-v1/current.md) | 57.3% | estimated ± 5.4 pp, medium confidence |
| [OSWorld 2.1](https://benchgap.net/b/osworld-2-1/current.md) | 64.8% | estimated ± 7.8 pp, medium confidence |
| [Toolathlon-Verified](https://benchgap.net/b/toolathlonverified/current.md) | 73.4% | estimated ± 2.6 pp, high confidence |
| [Hermes Index](https://benchgap.net/b/hermesindex/current.md) | 37.2% | estimated ± 3.1 pp, high confidence |
| [ExploitGym](https://benchgap.net/b/exploitgym/current.md) | 12.0% | estimated ± 4.0 pp, high confidence |
| [Finance Agent v2](https://benchgap.net/b/financeagentv2/current.md) | 56.1% | estimated ± 3.8 pp, medium confidence |
| [Agents' Last Exam](https://benchgap.net/b/agentslastexam/current.md) | 35.2% | estimated ± 10.7 pp, low confidence |