Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning): The Ultimate Performance & Pricing Comparison

Deep dive into reasoning, benchmarks, and latency insights.

The Final Verdict in the Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) Showdown

After a comprehensive analysis, Grok 4 Fast (Reasoning) emerges as the superior choice for users prioritizing raw intelligence and reasoning. However, Qwen3.5 122B A10B (Reasoning) remains a highly competitive option, especially for scenarios demanding faster response times and cost-efficiency. This detailed Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (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.

Grok 4 Fast (Reasoning)

xAI

Reasoning: 9
Coding: 3
Multimodal: 3
Long Context: 4
Blended Price / 1M tokens: $0.000
P95 Latency: 1000ms
Tokens per second: 155.258tokens/sec

Qwen3.5 122B A10B (Reasoning)

Other

Reasoning: 6
Coding: 3
Multimodal: 3
Long Context: 5
Blended Price / 1M tokens: $0.001
P95 Latency: 1000ms
Tokens per second: 122.585tokens/sec

Overall Capabilities

The capability radar provides a holistic view of the Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) matchup. This chart illustrates each model's strengths and weaknesses at a glance, forming a cornerstone of our Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) analysis.

This radar chart visually maps the core capabilities (reasoning, coding, math proxy, multimodal, long context) of `Grok 4 Fast (Reasoning)` vs `Qwen3.5 122B A10B (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 Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) debate, Grok 4 Fast (Reasoning) scores 90 against Qwen3.5 122B A10B (Reasoning)'s 60. This data-driven approach is essential for any serious Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (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 Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) decision for interactive applications. The metrics below highlight the trade-offs you should weigh before shipping to production.

Time to First Token

Grok 4 Fast (Reasoning)300ms

Qwen3.5 122B A10B (Reasoning)300ms

Tokens per Second

Grok 4 Fast (Reasoning)155.258

Qwen3.5 122B A10B (Reasoning)122.585

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The Economics of Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning)

Power is only one part of the equation. This Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (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, Grok 4 Fast (Reasoning) would cost $0.000, whereas Qwen3.5 122B A10B (Reasoning) would cost $0.001. This practical calculation is vital for any developer considering the Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) choice.

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Which Model Wins the Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) Battle for You?

Choose Grok 4 Fast (Reasoning) if...

Your top priority is raw performance and capability.

You are working in a technical or scientific field requiring the highest accuracy.

You need the most advanced reasoning capabilities available.

Choose Qwen3.5 122B A10B (Reasoning) if...

You are developing at scale where operational costs are critical.

You prioritize cost-effectiveness over maximum performance.

Your workload requires consistent, reliable performance.

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Your Questions about the Grok 4 Fast (Reasoning) vs Qwen3.5 122B A10B (Reasoning) Comparison

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