grok-4-0709 vs GPT-5.3-Codex
grok-4-0709 is cheaper on output tokens, while GPT-5.3-Codex offers a larger context window. Choose grok-4-0709 or GPT-5.3-Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | grok-4-0709 | GPT-5.3-Codex |
|---|---|---|
| Provider | Jiekou.AI | OpenAI |
| Input / 1M tokens | $2.70 | $1.75 |
| Output / 1M tokens | $13.50 | $14.00 |
| Context window | 256K | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Jan 2026 | Feb 2026 |
| LiveBench score | 61.8 | 73.2 |
| Epoch Capabilities Index score | — | 157 |
| LMArena WebDev Elo score | — | 1406 |
FAQ
Is grok-4-0709 or GPT-5.3-Codex cheaper?
grok-4-0709 is cheaper on output tokens ($13.50 vs $14.00 per 1M).
Which has the larger context window, grok-4-0709 or GPT-5.3-Codex?
GPT-5.3-Codex has the larger context window (400K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.