Price comparison · checked October 12, 2026

Claude Sonnet 5.5 vs Grok 4.3 pricing

For a typical support chatbot (60,000 conversations a month), Grok 4.3 costs $158 a month and Claude Sonnet 5.5 costs $360. That makes Grok 4.3 2.3× cheaper for this workload.

Claude Sonnet 5.5Grok 4.3
ProviderAnthropicxAI
Input / 1M$2.00$1.25
Cached input / 1M$0.10$0.20
Output / 1M$10.00$2.50
Context window1M1M
Notes–Higher rate for prompts of 200K+

Monthly cost by workload

WorkloadClaude Sonnet 5.5Grok 4.3Difference
Support chatbot
60,000 req · 1,500 in / 300 out
$360$158Grok 4.3 2.3× cheaper
Document summaries
20,000 req · 6,000 in / 400 out
$320$170Grok 4.3 1.9× cheaper
Coding assistant
30,000 req · 4,000 in / 800 out
$480$210Grok 4.3 2.3× cheaper
RAG search
100,000 req · 2,500 in / 250 out
$750$375Grok 4.3 2.0× cheaper

Standard rates, no caching or batch discounts. Sources: docs.x.ai · platform.claude.com

Try your own numbers

Start from a use case

1,000 tokens is about 750 English words. Input includes your system prompt, chat history and any retrieved documents.

Grok 4.3
xAICheapest
$158 /mo
Claude Sonnet 5.5
Anthropic
$360 /mo

Related comparisons