Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning): The Ultimate Performance & Pricing Comparison

Deep dive into reasoning, benchmarks, and latency insights.

The Final Verdict in the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) Showdown

After a comprehensive analysis, Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) emerges as the superior choice for users prioritizing raw intelligence and reasoning. However, Grok 4.20 Beta 0309 (Reasoning) remains a highly competitive option, especially for scenarios demanding faster response times and cost-efficiency. This detailed Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) comparison will break down every critical metric to help you make the best decision.

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Model Snapshot

Key decision metrics at a glance.

Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Anthropic

Reasoning: 6
Coding: 5
Multimodal: 4
Long Context: 6
Blended Price / 1M tokens: $0.006
P95 Latency: 1000ms
Tokens per second: 55.871tokens/sec

Grok 4.20 Beta 0309 (Reasoning)

xAI

Reasoning: 6
Coding: 4
Multimodal: 4
Long Context: 6
Blended Price / 1M tokens: $0.003
P95 Latency: 1000ms
Tokens per second: 106.421tokens/sec

Overall Capabilities

The capability radar provides a holistic view of the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) matchup. This chart illustrates each model's strengths and weaknesses at a glance, forming a cornerstone of our Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) analysis.

This radar chart visually maps the core capabilities (reasoning, coding, math proxy, multimodal, long context) of `Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)` vs `Grok 4.20 Beta 0309 (Reasoning)`.

Benchmark Breakdown

For a granular look, this chart directly compares scores across standardized benchmarks. In the critical MMLU Pro test, a key part of the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) debate, Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) scores 60 against Grok 4.20 Beta 0309 (Reasoning)'s 60. This data-driven approach is essential for any serious Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) comparison.

This grouped bar chart provides a side-by-side comparison for each benchmark metric.

Speed & Latency

Speed is a crucial factor in the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) decision for interactive applications. The metrics below highlight the trade-offs you should weigh before shipping to production.

Time to First Token

Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)300ms

Grok 4.20 Beta 0309 (Reasoning)300ms

Tokens per Second

Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)55.871

Grok 4.20 Beta 0309 (Reasoning)106.421

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The Economics of Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning)

Power is only one part of the equation. This Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) pricing analysis gives you a true sense of value.

Pricing Breakdown

Compare input and output pricing at a glance.

Real-World Cost Scenario

To process 1M input tokens and generate 250k output tokens, Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) would cost $0.007, whereas Grok 4.20 Beta 0309 (Reasoning) would cost $0.004. This practical calculation is vital for any developer considering the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) choice.

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Which Model Wins the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) Battle for You?

Choose Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) if...

Cost is a secondary concern to power in your Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) decision.

You need the most advanced reasoning capabilities available.

Your use case demands cutting-edge AI performance.

Choose Grok 4.20 Beta 0309 (Reasoning) if...

You need a highly responsive model for user-facing applications.

Your budget is a primary consideration in the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) choice.

You are developing at scale where operational costs are critical.

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Your Questions about the Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) vs Grok 4.20 Beta 0309 (Reasoning) Comparison

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