Compare/Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4

Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)vsGrok 4

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

Anthropic

Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Input
$3/M
Output
$15/M
Speed
66 tok/s
TTFT
33.99s
xAI

Grok 4

Input
$3/M
Output
$15/M
Speed
47 tok/s
TTFT
8.38s

Winner by Category

Cheaper
Tie
Faster (tok/s)
Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)
Lower Latency
Grok 4
Benchmarks (6-6)
Tie

Pricing Comparison

MetricClaude Sonnet 4.6 (Adaptive Reasoning, Max Effort)Grok 4
Input ($/M tokens)$3$3
Output ($/M tokens)$15$15
Cost for 1M input + 100K output tokens:
Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)$4.50
Grok 4$4.50

Speed Comparison

Output Speed (tokens/s) — higher is better
Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)
66 tok/s
Grok 4
47 tok/s
Time to First Token (seconds) — lower is better
Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)
33.99s
Grok 4
8.38s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
51.741.5
Coding Index
50.940.5
Math Index
92.7
GPQA Diamond
87.5%87.7%
MMLU-Pro
86.6%
LiveCodeBench
81.9%
AIME 2025
92.7%
MATH-500
99.0%
Humanity's Last Exam
30.0%23.9%
SciCode
46.8%45.7%
IFBench
56.6%53.7%
TerminalBench
53.0%37.9%
Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)6 wins
6 winsGrok 4

Frequently Asked Questions

Which is cheaper, Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) or Grok 4?

Both models have similar pricing. Check the detailed breakdown above for input vs output token costs.

Which model performs better on benchmarks?

It's a tie — both models win 6 benchmarks each across 12 evaluated categories. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) generates tokens faster at 66 tok/s vs 47 tok/s. However, Grok 4 has lower time-to-first-token (8.38s vs 33.99s).

When should I use Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4?

Choose based on your priorities: both are similarly priced, both perform similarly on benchmarks, and Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) for faster generation. For latency-sensitive apps, check the TTFT comparison above.