OpenAI: GPT-5.3-Codex vs xAI: Grok Latest
OpenAI: GPT-5.3-Codex is 1.1× cheaper for input tokens: OpenAI: GPT-5.3-Codex costs $1.75 per M and xAI: Grok Latest costs $2.00 per M. xAI: Grok Latest is 2.3× cheaper for output tokens: OpenAI: GPT-5.3-Codex costs $14.00 per M and xAI: Grok Latest costs $6.00 per M. xAI: Grok Latest reads more: OpenAI: GPT-5.3-Codex takes up to 400,000 tokens of context and xAI: Grok Latest up to 500,000.
| OpenAI: GPT-5.3-Codex | xAI: Grok Latest | |
|---|---|---|
| Model id | openai/gpt-5.3-codex | x-ai/grok-latest |
| Input | $1.75 per M | $2.00 per M |
| Output | $14.00 per M | $6.00 per M |
| Context length | 400,000 tokens | 500,000 tokens |
| Accepts | file, image, text | file, image, text |
| Produces | text | text |
| Served by | openai | xai |
Prices are the providers' list prices per million tokens, as of . Both run on your own provider key through one OpenAI-compatible endpoint, with no fee on the tokens.