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DeepSeek DeepSeek V4 Pro VS xAI Grok 4.5

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

⚖️Our Take

If your budget allows, Grok 4.5 is the superior choice here, offering a clear benchmark advantage while carrying only a slight price premium (1.4x). We recommend choosing DeepSeek V4 Pro only if you need to optimize costs for very high-volume pipelines.
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Model Specs

DeepSeek V4 Pro

Open SourceAPI Available

Benchmarks & Scores

Coding (swe-bench-pro)
52.1%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)
88%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)1.4x cheaper
$2.17Input: $1.74 | Output: $3.48
Context WindowLarger
1.05M tokens
Model Specs

Grok 4.5

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+12.6%)
64.7%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)Winner (+5.0%)
93%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)
$3.00Input: $2.00 | Output: $6.00
Context Window
500k tokens

Frequently Asked Questions about DeepSeek V4 Pro vs Grok 4.5 comparison

DeepSeek V4 Pro is cheaper than Grok 4.5. DeepSeek V4 Pro has a blended cost of $2.17/1M tokens, which is about 1.4x cheaper than Grok 4.5 at $3.00/1M tokens.

Grok 4.5 is better for coding tasks on this benchmark. It scores 64.7% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to DeepSeek V4 Pro which scores 52.1%.