Gemma 4 (Google) vs Codex (OpenAI)
Which one should you pick? Here's the full breakdown.
Gemma 4 (Google)
Google DeepMind's open-weights model family -- multimodal, 256K context, runs on edge devices
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 | Gemma 4 (Google) | Codex (OpenAI) |
|---|---|---|
| Ease of Use | 7.0 | 8.0 |
| Output Quality | 8.0 | 8.0 |
| Value | 10.0 | 8.0 |
| Features | 8.0 | 9.0 |
| Overall | 8.3 | 8.3 |
Pricing Comparison
| Feature | Gemma 4 (Google) | Codex (OpenAI) |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Benchmark Head-to-Head
Gemma 4 31B vs GPT-5.3-Codex
| Benchmark | Gemma 4 (Google) | Codex (OpenAI) |
|---|---|---|
| HumanEval | 85% | 95% |
Which Should You Pick?
Pick Gemma 4 (Google) if...
- ✓Better value for money (10/10)
Developers and businesses who need a permissively licensed multimodal LLM they can self-host or fine-tune. Especially good for multilingual use cases and on-device deployment.
Visit Gemma 4 (Google)Pick Codex (OpenAI) if...
- ✓Easier to use (8 vs 7)
- ✓More features (9 vs 8)
- ✓Stronger on python code generation (+10.0% on HumanEval)
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
Gemma 4 (Google) and Codex (OpenAI) are extremely close overall. Your choice comes down to specific needs -- Gemma 4 (Google) is better for developers and businesses who need a permissively licensed multimodal llm they can self-host or fine-tune, while Codex (OpenAI) works best for developers already paying for chatgpt plus who want a coding agent at no extra cost.