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Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
💰SpaceXAI: Grok 4.6 is 33% cheaper than xAI: Grok 4
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
SpaceXAI: Grok 4.6 is 50% cheaper
| Spec | xAI: Grok 4 | SpaceXAI: Grok 4.6 |
|---|---|---|
| Provider | x-ai | x-ai |
| Input price / 1M tokens | $3.00 | $2.00 |
| Output price / 1M tokens | $15.00 | $6.00 |
| Context window | 256k tokens | 500k tokens |
| Latency (p50) | — | — |
| Best benchmark score | — | — |
| Open source | No | No |
Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not...
Grok 4.6 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM. It is succeeded by [Grok 4.7](/x-ai/grok-4.7).
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