SpaceXAI: Grok 4.5
Provider: x-ai · x-ai/grok-4.5
How SpaceXAI: Grok 4.5 pricing compares
At $6 / 1M output tokens, SpaceXAI: Grok 4.5 is the 6th-cheapest of 6 x-ai models we track. It's cheaper than 26% of the 392 paid models on computetrail (291st-cheapest overall). Output costs 3.0× its input price ($2 / 1M in). For a typical 3:1 input-to-output workload that works out to about $3.00 / 1M blended. Reading cached input costs 85% less than fresh input, so prompt caching cuts repeat-context cost sharply. Its 500,000 tokens context window ranks 134th-largest of 392 models with a published limit.
Output price history
Across 50 daily snapshots since 2026-07-09, the output price has held steady at $6 / 1M — no change so far.
Similar-priced models
| Model | Provider | Output $/1M | Context |
|---|---|---|---|
| SpaceXAI: Grok 4.6 | x-ai | $6 | 500,000 |
| Mistral: Mixtral 8x22B Instruct | mistralai | $6 | 65,536 |
| Mistral Large | mistralai | $6 | 128,000 |
| Google: Gemini 2.5 Pro (batch) | $5 | 1,048,576 | |
| Google: Gemini 3.5 Flash (batch) | $4.5 | 1,048,576 | |
| Mistral: Mistral Medium 3.5 | mistralai | $7.5 | 262,144 |
Prices are recorded daily from public provider data via OpenRouter and normalized to USD per 1M tokens. See methodology.