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

Deep dive into reasoning, benchmarks, and latency insights.

The Final Verdict in the Grok 4.20 Beta 0309 (Reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) 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 Grok 4.20 Beta 0309 (Reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) comparison will break down every critical metric to help you make the best decision.

Explore best-for scenarios•Let the AI Selector recommend next steps

Model Snapshot

Key decision metrics at a glance.

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

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

Overall Capabilities

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

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

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 Grok 4.20 Beta 0309 (Reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) debate, Grok 4.20 Beta 0309 (Reasoning) scores 60 against Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)'s 60. This data-driven approach is essential for any serious Grok 4.20 Beta 0309 (Reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) comparison.

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

Speed & Latency

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

Time to First Token

Grok 4.20 Beta 0309 (Reasoning)300ms

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

Tokens per Second

Grok 4.20 Beta 0309 (Reasoning)106.421

Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)55.871

Head to the playground to validate these results yourself

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

Power is only one part of the equation. This Grok 4.20 Beta 0309 (Reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) 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, Grok 4.20 Beta 0309 (Reasoning) would cost $0.004, whereas Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) would cost $0.007. This practical calculation is vital for any developer considering the Grok 4.20 Beta 0309 (Reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) choice.

Review the complete pricing and packaging strategy

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

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

You need the most advanced reasoning capabilities available.

Your use case demands cutting-edge AI performance.

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

You are developing at scale where operational costs are critical.

You prioritize cost-effectiveness over maximum performance.

Your workload requires consistent, reliable performance.

Explore all Best picks Use the AI Selector for a tailored recommendation

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

Review the full evaluation methodology · Read the latest analysis posts