Codex CLI
Visit WebsiteBest for speed. GPT-5.3 leads Terminal-Bench 2.0 at 77.3% with 240+ tokens/sec throughput—2.5x faster than Opus. Best for high-volume edits and boilerplate.
Best for speed. GPT-5.3 leads Terminal-Bench 2.0 at 77.3% with 240+ tokens/sec throughput—2.5x faster than Opus. Best for high-volume edits and boilerplate.