Claude Sonnet 5 vs Grok 4.3
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
|
by Anthropic
|
by xAI
|
|
|---|---|---|
| Overview | ||
| Status | Current mid tier | Current flagship |
| Released | Jun 30, 2026 | Apr 30, 2026 |
| Pricing per million tokens | ||
| Input | $2.00/Mtok | $1.25/Mtok |
| Output | $10.00/Mtok | $2.50/Mtok |
| Blended avg | $6.00/Mtok | $1.88/Mtok |
| Cached input | $0.200/Mtok | — |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimage
|
| Benchmarks from Vellum LLM Leaderboard | ||
| Avg benchmark score | 72.4 | |
| Perf / dollar | 38.6 | |
| GPQA Diamond | — | 80 |
| SWE-Bench | — | 65 |
| HumanEval | — | 90 |
| MATH 500 | — | 88 |
| Providers | ||
| Available from |
Anthropic — $2.00/$10.00/Mtok
|
xAI — $1.25/$2.50/Mtok
|
Cost at scale — 1M tokens (50/50 input/output)
| Volume | Claude Sonnet 5 | Grok 4.3 | Savings |
|---|---|---|---|
| 1M tokens | $6 | $1.88 | $4.13 (68.8%) |
| 10M tokens | $60 | $18.75 | $41.25 (68.8%) |
| 100M tokens | $600 | $187.5 | $412.5 (68.8%) |
| 1000M tokens | $6000 | $1875 | $4125 (68.8%) |
Summary
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.
Grok 4.3 by xAI costs $1.25/Mtok input and $2.50/Mtok output, with a 1M-token context window. It supports text, image input.
On a blended cost basis, Grok 4.3 is 220% cheaper than Claude Sonnet 5.
On benchmarks, Grok 4.3 scores higher (72.4 vs ) on average. In terms of value, Grok 4.3 has better performance per dollar (38.6 vs ).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.