OpenAI: GPT-5.6 Terra vs SpaceXAI: Grok 4.6
openai vs x-ai
On price, SpaceXAI: Grok 4.6 is cheaper (blended cost is about 0.67× that of OpenAI: GPT-5.6 Terra).
On capability, SpaceXAI: Grok 4.6 has the higher intelligence index (44) — better for complex reasoning.
Verdict: pick SpaceXAI: Grok 4.6 on a budget, or SpaceXAI: Grok 4.6 for output quality. Full details below.
Side-by-Side Specs
| Metric | OpenAI: GPT-5.6 Terra | SpaceXAI: Grok 4.6 |
|---|---|---|
| Input /1M | $2.00 | $2.00 |
| Output /1M | $12.00 | $6.00 |
| Blended (3:1) | $4.50 | $3.00 |
| Context | 1.1M | 500K |
| Intelligence | 42 | 44 |
| Coding | 77 | 77 |
| Math | — | — |
| Speed | 126 tok/s | — |
| CPS Grade | A | A |
FAQ
Which is cheaper, OpenAI: GPT-5.6 Terra or SpaceXAI: Grok 4.6?
On price, SpaceXAI: Grok 4.6 is cheaper (blended cost is about 0.67× that of OpenAI: GPT-5.6 Terra). OpenAI: GPT-5.6 Terra: $2 in / $12 out; SpaceXAI: Grok 4.6: $2 in / $6 out (per 1M tokens).
Which is smarter, OpenAI: GPT-5.6 Terra or SpaceXAI: Grok 4.6?
On capability, SpaceXAI: Grok 4.6 has the higher intelligence index (44) — better for complex reasoning. Coding index: OpenAI: GPT-5.6 Terra 77 vs SpaceXAI: Grok 4.6 77.
Which one should I choose?
Verdict: pick SpaceXAI: Grok 4.6 on a budget, or SpaceXAI: Grok 4.6 for output quality. Full details below.