TRAE vs OpenAI Codex
TRAE vs OpenAI Codex (AI Code Editors & IDEs). Agent test scores: TRAE 9/10, OpenAI Codex 7.4/10. TRAE scored 1.6 higher overall in our separate rubric v0.1 tests (editions and tasks can differ — see Edition tested and the notes below). Pricing: TRAE — Pro $20/mo ($200/yr); Pro+ $60/mo; Ultra $200/mo; Lite $8/mo in select countries only; OpenAI Codex — Included in every ChatGPT plan (Free, Go, Plus, Pro, Business, Enterprise, Edu); usage limits vary by plan. Codex Cloud needs Plus, Pro, Business, Enterprise or Edu. Plus/Pro buyers can add credits. Plan prices on chatgpt.com/pricing.
Every fact on this page comes from our tool records and test logs. Last updated:
- VibeToolRank score
- 9/10
- Last tested
- 2026-11-04
- Runs
- 3 runs
- Outcome score
- 10/10
- Edition tested
- trae-agent OSS CLI 0.1.0 with Google AI Studio gemini-3.5-flash-lite after a local one-line google_client role=user patch (BYOK, $0). Not TRAE IDE Auto mode
- Free plan, as measured
- $0 per bugfix run on a free Gemini key (BYOK) after local client patch
- Free plan
- Yes: TRAE IDE has limited monthly Auto-mode usage (no card claimed on docs). trae-agent OSS is free to self-host with your own model key.
- Price
- Pro $20/mo ($200/yr); Pro+ $60/mo; Ultra $200/mo; Lite $8/mo in select countries only
- Pricing checked
- 2026-11-04
- VibeToolRank score
- 7.4/10
- Last tested
- 2026-10-16
- Runs
- 3 runs
- Outcome score
- 8/10
- Edition tested
- Codex CLI 0.163.0 with OpenRouter free model cohere/north-mini-code:free (no ChatGPT login; not OpenAI's models)
- Free plan, as measured
- 33K–262K tokens per bugfix run on a free OpenRouter model, $0
- Free plan
- Yes: Codex CLI, IDE extension and app on ChatGPT Free and Go with plan usage limits (no Codex Cloud)
- Price
- Included in every ChatGPT plan (Free, Go, Plus, Pro, Business, Enterprise, Edu); usage limits vary by plan. Codex Cloud needs Plus, Pro, Business, Enterprise or Edu. Plus/Pro buyers can add credits. Plan prices on chatgpt.com/pricing
- Pricing checked
- 2026-11-02
Side by side
| Field | TRAE | OpenAI Codex |
|---|---|---|
| What it is | TRAEByteDance AI coding stack: TRAE IDE (trae.ai) plus the open-source trae-agent CLI (bytedance/trae-agent) for headless software-engineering tasks with BYOK models. | OpenAI CodexOpenAI's coding agent for CLI, IDE and cloud. |
| Pricing | TRAEPro $20/mo ($200/yr); Pro+ $60/mo; Ultra $200/mo; Lite $8/mo in select countries only | OpenAI CodexIncluded in every ChatGPT plan (Free, Go, Plus, Pro, Business, Enterprise, Edu); usage limits vary by plan. Codex Cloud needs Plus, Pro, Business, Enterprise or Edu. Plus/Pro buyers can add credits. Plan prices on chatgpt.com/pricing |
| Free tier | TRAEYes: TRAE IDE has limited monthly Auto-mode usage (no card claimed on docs). trae-agent OSS is free to self-host with your own model key. | OpenAI CodexYes: Codex CLI, IDE extension and app on ChatGPT Free and Go with plan usage limits (no Codex Cloud) |
| Pricing verified | TRAE2026-11-04 | OpenAI Codex2026-11-02 |
| Edition tested | TRAEtrae-agent OSS CLI 0.1.0 with Google AI Studio gemini-3.5-flash-lite after a local one-line google_client role=user patch (BYOK, $0). Not TRAE IDE Auto mode | OpenAI CodexCodex CLI 0.163.0 with OpenRouter free model cohere/north-mini-code:free (no ChatGPT login; not OpenAI's models) |
| Tested on | TRAE2026-11-04 | OpenAI Codex2026-10-16 |
| Outcome score | TRAE10 | OpenAI Codex8 |
| Speed score | TRAE8 | OpenAI Codex8 |
| Cost score | TRAE10 | OpenAI Codex9 |
| Developer experience score | TRAE5 | OpenAI Codex6 |
| Reliability score | TRAE10 | OpenAI Codex5 |
| Overall score | TRAE9 | OpenAI Codex7.4 |
What our tests found
TRAE
trae-agent OSS CLI fixed our seeded cart discount bug in 3 of 3 runs (19–42s each) with a free Gemini key, never touched the test file. Cost $0. Overall 9.0 (outcome 10, speed 8, cost 10, DX 5, reliability 10). DX lost points because stock trae-agent sends Gemini tool results with role=tool, which the current Gemini API rejects until you patch google_client.py; a yaml config file is also required.OSS CLI
- Fixed the seeded bug in 3/3 CLI runs with a free model
- Did not modify the test file in any run
- OSS self-host / BYOK path needs no TRAE IDE account
- Fast once the Gemini client patch is applied (19–42s)
- Stock google_client uses role=tool and fails against current Gemini API until patched
- Requires a trae_config.yaml; CLI flags alone are not enough without a config file
- We scored the OSS CLI only, not the TRAE IDE free Auto mode
Who it’s for: Developers who want a ByteDance-built coding agent; IDE users get limited free Auto mode, and CLI users can self-host trae-agent with a free Gemini or OpenRouter key.
OpenAI Codex
Using a custom OpenRouter provider and a small free model, Codex CLI fixed our seeded cart bug in 2 of 3 runs (19-76s). In the failed run the model issued an apply_patch call that Codex rejected. Token use was high (33K-262K). Not tested with OpenAI's own models.CLI, free model
- Runs without a ChatGPT login through any Responses-compatible provider
- Fixed the bug in 2 of 3 runs on a free model at $0
- Sandboxed workspace-write mode for unattended runs
- With a free model, 1 of 3 runs failed on an unsupported apply_patch call
- Used 33K-262K tokens per run, versus about 2K for Aider
- Flags change between versions (--full-auto removed) and the chat wire API is no longer supported
- Our test did not use OpenAI's own models
- Codex cloud (the web agent) needs ChatGPT Plus, Pro or Business; the Go plan redirects to an upgrade (2026-10-16)
Who it’s for: Developers in the OpenAI ecosystem who want a terminal agent; it works best with OpenAI models via a ChatGPT plan or API key.
Verdict
Scores use rubric v0.1 from separate runs. Editions and tasks can differ (see Edition tested and What our tests found); some tests were a single run, which caps reliability scores. Overall: TRAE 9, OpenAI Codex 7.4. Check the free-tier limits above against your project before choosing.
FAQ
Which is better, TRAE or OpenAI Codex?
In our tests TRAE scored higher overall (9/10 vs 7.4/10). Scores use the same rubric (v0.1) but came from separate runs; editions and tasks may differ (see Edition tested and test summaries), so check the per-dimension scores for what matters to you.
Is TRAE free?
Yes: TRAE IDE has limited monthly Auto-mode usage (no card claimed on docs). trae-agent OSS is free to self-host with your own model key. (pricing checked 2026-11-04).
Is OpenAI Codex free?
Yes: Codex CLI, IDE extension and app on ChatGPT Free and Go with plan usage limits (no Codex Cloud) (pricing checked 2026-11-02).
How much does TRAE cost compared with OpenAI Codex?
TRAE: Pro $20/mo ($200/yr); Pro+ $60/mo; Ultra $200/mo; Lite $8/mo in select countries only. OpenAI Codex: Included in every ChatGPT plan (Free, Go, Plus, Pro, Business, Enterprise, Edu); usage limits vary by plan. Codex Cloud needs Plus, Pro, Business, Enterprise or Edu. Plus/Pro buyers can add credits. Plan prices on chatgpt.com/pricing.
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Scores come from our own tests and are never for sale; sponsored placements are always labelled. Some links are affiliate links (currently Railway). Disclosure