GPT-5.4-Cyber (OpenAI) vs Codex (OpenAI)
Which one should you pick? Here's the full breakdown.
GPT-5.4-Cyber (OpenAI)
OpenAI's defensive-cybersecurity variant of GPT-5.4, launched 2026-04-16. Lowered refusal boundary for security-research tasks and native binary reverse-engineering. Access gated via Trusted Access for Cyber (TAC) program -- thousands of verified defenders, hundreds of teams, no public pricing
Codex (OpenAI)
OpenAI's cloud-based coding agent -- runs parallel tasks, proposes PRs, and lives inside ChatGPT
Powered by GPT-5.3-Codex / GPT-5.4
| Category | GPT-5.4-Cyber (OpenAI) | Codex (OpenAI) |
|---|---|---|
| Ease of Use | 5.0 | 8.0 |
| Output Quality | 8.5 | 8.0 |
| Value | 7.0 | 8.0 |
| Features | 8.0 | 9.0 |
| Overall | 7.2 | 8.3 |
Pricing Comparison
| Feature | GPT-5.4-Cyber (OpenAI) | Codex (OpenAI) |
|---|---|---|
| Free Tier | No | Yes |
| Starting Price | Not publicly disclosed | $0 |
Benchmark Head-to-Head
GPT-5.3-Codex benchmarks — GPT-5.4-Cyber (OpenAI) has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| SWE-bench | Real GitHub issue fixing | 72% |
| HumanEval | Python code generation | 95% |
Which Should You Pick?
Pick GPT-5.4-Cyber (OpenAI) if...
Enterprise SOC teams, established security research orgs, and vetted individual defenders who can qualify for Trusted Access for Cyber. Strongest fit if your work involves binary analysis, vulnerability research, or defensive-security tooling where standard GPT-5.4 refusals actually block the work.
Visit GPT-5.4-Cyber (OpenAI)Pick Codex (OpenAI) if...
- ✓Easier to use (8 vs 5)
- ✓Better value for money (8/10)
- ✓More features (9 vs 8)
- ✓Has a free tier
Developers already paying for ChatGPT Plus who want a coding agent at no extra cost. Especially good for parallel task execution -- assign multiple bug fixes or feature branches and let Codex work them simultaneously.
Visit Codex (OpenAI)Our Verdict
Codex (OpenAI) is the clear winner here with 8.3/10 vs 7.2/10. GPT-5.4-Cyber (OpenAI) isn't bad, but Codex (OpenAI) outperforms it across the board. Pick GPT-5.4-Cyber (OpenAI) only if enterprise soc teams, established security research orgs, and vetted individual defenders who can qualify for trusted access for cyber.