OpenAI: GPT-5.3-Codex vs SpaceXAI: Grok 4.6
OpenAI: GPT-5.3-Codex is 1.1× cheaper for input tokens: OpenAI: GPT-5.3-Codex costs $1.75 per M and SpaceXAI: Grok 4.6 costs $2.00 per M. SpaceXAI: Grok 4.6 is 2.3× cheaper for output tokens: OpenAI: GPT-5.3-Codex costs $14.00 per M and SpaceXAI: Grok 4.6 costs $6.00 per M. SpaceXAI: Grok 4.6 reads more: OpenAI: GPT-5.3-Codex takes up to 400,000 tokens of context and SpaceXAI: Grok 4.6 up to 500,000.
| OpenAI: GPT-5.3-Codex | SpaceXAI: Grok 4.6 | |
|---|---|---|
| Model id | openai/gpt-5.3-codex | x-ai/grok-4.6 |
| 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.