Grok 4.3 vs Claude Sonnet 4.6
xAI's latest Grok meets Anthropic's flagship Sonnet. Grok 4.3 costs 58% less on input and 83% less on output — both with 1M context. See which fits your workload.
Pricing data verified: Jun 7, 2026
| Specification | Grok 4.3 (xAI) | Claude Sonnet 4.6 (Anthropic) |
|---|---|---|
| Input Price (per 1M tokens) | $1.25 | $3.00 |
| Output Price (per 1M tokens) | $2.50 | $15.00 |
| Context Window | 1M tokens | 1M tokens |
| Tier | Mid | Mid |
| Provider | xAI | Anthropic |
Calculate Your Exact Costs
Same tier, massive price gap — see how the costs stack up for your usage.
Other Models to Consider
Which Model for Which Use Case?
High-Volume Chatbots
Grok 4.3's 83% cheaper output pricing makes it the clear winner for chatbots handling thousands of daily conversations.
Safety-Critical Applications
Anthropic's safety-focused approach makes Claude Sonnet 4.6 the better choice for content moderation, sensitive applications, and enterprise compliance requirements.
Content Generation
Output-heavy workloads like article writing and marketing copy. Grok 4.3's 83% cheaper output pricing wins decisively.
Complex Reasoning
Claude Sonnet 4.6 excels at complex multi-step reasoning, nuanced analysis, and tasks requiring careful instruction following.
Comparing xAI and Anthropic?
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Frequently Asked Questions
Is Grok 4.3 cheaper than Claude Sonnet 4.6?
Yes. Grok 4.3 is significantly cheaper: $1.25/M input (58% cheaper than Claude Sonnet 4.6's $3.00/M) and $2.50/M output (83% cheaper than Claude Sonnet 4.6's $15.00/M). Both have 1M context windows.
When would I choose Claude Sonnet 4.6?
Choose Claude Sonnet 4.6 if you need Anthropic's safety-focused approach, superior instruction following, or enterprise-grade content moderation. Claude also offers stronger performance on complex reasoning tasks.
Do both models have 1M context windows?
Yes. Both Grok 4.3 and Claude Sonnet 4.6 support 1M token context windows, making them suitable for long documents, codebases, and extended conversations.
Which is better for production workloads?
Grok 4.3 offers dramatically lower costs — up to 83% savings on output-heavy tasks. Claude Sonnet 4.6 provides Anthropic's enterprise infrastructure and safety guarantees. For cost-sensitive production, Grok wins. For enterprise compliance, Claude may be preferred.