Grok 4.5 vs Grok 4
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
Grok 4.5 is 55.6% cheaper on blended cost ($4.00 vs $9.00/Mtok)
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Xby xAI
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Xby xAI
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|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | Jul 8, 2026 | Jul 9, 2025 |
| Pricing per million tokens | ||
| Input | $2.00/Mtok | $3.00/Mtok |
| Output | $6.00/Mtok | $15.00/Mtok |
| Blended avg | $4.00/Mtok | $9.00/Mtok |
| Specifications | ||
| Context window | 500K tokens | 256K tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
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textimage
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| Providers | ||
| Available from |
xAI — $2.00/$6.00/Mtok
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xAI — $3.00/$15.00/Mtok
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Cost at scale — 1M tokens (50/50 input/output)
| Volume | Grok 4.5 | Grok 4 | Savings |
|---|---|---|---|
| 1M tokens | $4 | $9 | $5 (55.6%) |
| 10M tokens | $40 | $90 | $50 (55.6%) |
| 100M tokens | $400 | $900 | $500 (55.6%) |
| 1000M tokens | $4000 | $9000 | $5000 (55.6%) |
Try Grok 4.5 on xAI
The cheaper option here — Grok 4.5 costs $4.00/Mtok blended on xAI.
Summary
Grok 4.5 by xAI costs $2.00/Mtok input and $6.00/Mtok output, with a 500K-token context window. It supports text, image input.
Grok 4 by xAI costs $3.00/Mtok input and $15.00/Mtok output, with a 256K-token context window. It supports text, image input.
On a blended cost basis, Grok 4.5 is 55.6% cheaper than Grok 4. It also has a larger context window.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.