Codex (OpenAI) vs Bolt.new
Which one should you pick? Here's the full breakdown.
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
Bolt.new
AI full-stack web app builder by StackBlitz -- describe what you want and it writes the code in the browser
| Category | Codex (OpenAI) | Bolt.new |
|---|---|---|
| Ease of Use | 8.0 | 8.0 |
| Output Quality | 8.0 | 6.0 |
| Value | 8.0 | 5.0 |
| Features | 9.0 | 7.0 |
| Overall | 8.3 | 6.5 |
Pricing Comparison
| Feature | Codex (OpenAI) | Bolt.new |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Benchmark Head-to-Head
GPT-5.3-Codex benchmarks — Bolt.new has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| SWE-bench | Real GitHub issue fixing | 72% |
| HumanEval | Python code generation | 95% |
Which Should You Pick?
Pick Codex (OpenAI) if...
- ✓Higher output quality (8 vs 6)
- ✓Better value for money (8/10)
- ✓More features (9 vs 7)
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)Pick Bolt.new if...
Non-developers who want to quickly prototype a web app idea and don't need production quality. Also useful for developers who want to scaffold boilerplate fast and then take over manually.
Visit Bolt.newOur Verdict
Codex (OpenAI) is the clear winner here with 8.3/10 vs 6.5/10. Bolt.new isn't bad, but Codex (OpenAI) outperforms it across the board. Pick Bolt.new only if non-developers who want to quickly prototype a web app idea and don't need production quality.