@ceo_tommy1
It's way too convenient to make Codex handle GPT5.5Pro work, and it makes my tasks infinitely more productive.
Task Using GPT-5.5 Pro from the Codex CLI for day-to-day work.
anecdotalpaid user
OpenAIGPT
GPT-5.5 Pro
OpenAI · GPT. Released Apr 23, 2026.
GPT-5.5 Pro is a model from OpenAI in the GPT family, released Apr 23, 2026. evals.report tracks 8 reported GPT-5.5 Pro benchmark scores across FrontierMath, ARC-AGI-1, ARC-AGI-2, GPQA Diamond, AIME (OTIS Mock), SimpleQA Verified, Epoch Capabilities Index, FrontierMath Tier 4 — each shown with its benchmark, metric, source status, and date, and never combined into a single ranking.
8 results
Benchmark results 8
Compare this model| Benchmark | Category | Score | Metric | Status | Date | |
|---|---|---|---|---|---|---|
| FrontierMath | Reasoning | 52.4% | accuracy | Official | Apr 23, 2026 | Details |
| ARC-AGI-1 | Reasoning | 96.5% | accuracy | Official | Apr 23, 2026 | Details |
| ARC-AGI-2 | Reasoning | 84.58% | accuracy | Official | Apr 23, 2026 | Details |
| GPQA Diamond | Reasoning | 93.9% | accuracy | Official | Apr 23, 2026 | Details |
| AIME (OTIS Mock) | Reasoning | 100.0% | accuracy | Official | Apr 23, 2026 | Details |
| SimpleQA Verified | Other | 64.5% | accuracy | Official | Apr 23, 2026 | Details |
| Epoch Capabilities Index | Reasoning | 159.3 | Index | Official | Apr 23, 2026 | Details |
| FrontierMath Tier 4 | Reasoning | 39.6% | accuracy | Official | Apr 23, 2026 | Details |
In the wild 1
See allReal-world feedback on GPT-5.5 Pro from people using it on actual prompts — praise and criticism alike, each linked to its source. Qualitative, never scored.
Report tone
Report type
Topic
Positive