Grok 4.5 vs Claude Sonnet 5
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
Grok 4.5 is 33.3% cheaper on blended cost ($4.00 vs $6.00/Mtok) — note: different model classes (flagship vs mid tier)
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Xby xAI
|
Claude Sonnet 5 Intro price
Aby Anthropic
|
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|---|---|---|
| Overview | ||
| Status | Current flagship | Current mid tier |
| Released | Jul 8, 2026 | Jun 30, 2026 |
| Pricing per million tokens | ||
| Input | $2.00/Mtok | $2.00/Mtok |
| Output | $6.00/Mtok | $10.00/Mtok |
| Blended avg | $4.00/Mtok | $6.00/Mtok |
| Cached input | — | $0.200/Mtok |
| Specifications | ||
| Context window | 500K tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimage
|
| Providers | ||
| Available from |
xAI — $2.00/$6.00/Mtok
|
Anthropic — $2.00/$10.00/Mtok
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Cost at scale — 1M tokens (50/50 input/output)
| Volume | Grok 4.5 | Claude Sonnet 5 | Savings |
|---|---|---|---|
| 1M tokens | $4 | $6 | $2 (33.3%) |
| 10M tokens | $40 | $60 | $20 (33.3%) |
| 100M tokens | $400 | $600 | $200 (33.3%) |
| 1000M tokens | $4000 | $6000 | $2000 (33.3%) |
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.
Claude Sonnet 5 by Anthropic costs $2.00/Mtok input and $10.00/Mtok output, with a 1M-token context window. It supports text, image input.
On a blended cost basis, Grok 4.5 is 33.3% cheaper than Claude Sonnet 5.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.