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Claude Sonnet 4.6 vs Grok 4.3 — Price, Context, and Capability Compared

Verdict

Claude Sonnet 4.6 costs 3.8× more per blended million tokens than Grok 4.3. Grok 4.3 has the larger context window (1,000,000 tokens). Default to Grok 4.3 unless you specifically need Claude Sonnet 4.6's edge.

Spec comparison

Claude Sonnet 4.6Grok 4.3
Price (input)$3.00/M$1.25/M
Price (output)$15.00/M$2.50/M
Blended price$6.00/M$1.56/M
Context window300,000 tokens1,000,000 tokens
Max output64,000 tokens64,000 tokens
Modalitiestext, visiontext, vision
Reasoning modeYesYes
Released2026-032026-06
Speed76 t/s98 t/s

Cost at scale (3:1 blended)

Tokens / monthClaude Sonnet 4.6Grok 4.3Delta
1,000,000$6.00$1.56$4.44 (3.8×)
10,000,000$60.00$15.63$44.38 (3.8×)
100,000,000$600.00$156.25$443.75 (3.8×)

Choose Claude Sonnet 4.6 if…

  • Best intelligence-per-dollar in the Claude lineup
  • Fast enough for interactive coding agents
  • Reliable structured output
  • Enterprise workloads that need Opus-adjacent quality at Sonnet pricing.

Choose Grok 4.3 if…

  • xAI’s general-purpose flagship
  • Extremely fast for its size
  • 1M-token context
  • General-purpose work where speed and a huge context window both matter.

Run this exact matchup right now

Send the same prompt to Claude Sonnet 4.6 and Grok 4.3 side by side and see the outputs yourself.

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FAQ

Is Claude Sonnet 4.6 cheaper than Grok 4.3?

Grok 4.3 is cheaper, at $1.56 per million blended tokens vs $6.00 for Claude Sonnet 4.6.

Which has the bigger context window, Claude Sonnet 4.6 or Grok 4.3?

Grok 4.3 has the larger context window: 1,000,000 tokens vs 300,000.

Can Claude Sonnet 4.6 replace Grok 4.3 for coding?

Both are viable for coding. Best intelligence-per-dollar in the Claude lineup (Claude Sonnet 4.6) vs xAI’s general-purpose flagship (Grok 4.3) — pick based on which strength matters more for your workload.

Which is faster, Claude Sonnet 4.6 or Grok 4.3?

Grok 4.3 is faster: 98 t/s vs 76 t/s, measured on our speed benchmarks.

Related

Claude Sonnet 4.6 pricingGrok 4.3 pricingvs Gemini 3.1 Provs Claude Sonnet 4vs Claude Sonnet 4.5vs Claude Opus 4.8Premium model tests

Pricing verified 2026-04-06. Specs verified 2026-08-08.