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DeepSeek

DeepSeek V4 Flash

VS
xAI

Grok 4.3

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

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, DeepSeek V4 Flash is the premium intelligence choice, scoring 49.1% higher on coding benchmarks. However, Grok 4.3 compensates by delivering 1.9x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Grok 4.3 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of DeepSeek V4 Flash fully justifies the cost.

Model Specs

DeepSeek V4 Flash

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
49.1%
Reasoning (gpqa-diamond)
80%

Cost & Performance

Cost (per 1M tokens)8.9x cheaper
$0.17Input: $0.14 | Output: $0.28
Speed
109.1 tps
Context Window
1M tokens
Model Specs

Grok 4.3

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)Winner (+10.1%)
90.1%

Cost & Performance

Cost (per 1M tokens)
$1.56Input: $1.25 | Output: $2.50
Speed1.9x faster
209 tps
Context Window
1M tokens
Read our data collection methodology

Frequently Asked Questions

DeepSeek V4 Flash is cheaper than Grok 4.3. DeepSeek V4 Flash has a blended cost of $0.17/1M tokens, which is about 8.9x cheaper than Grok 4.3 at $1.56/1M tokens.

Grok 4.3 is faster than DeepSeek V4 Flash. Grok 4.3 generates 209 tokens per second (tps) compared to DeepSeek V4 Flash which generates 109.1 tokens per second.

DeepSeek V4 Flash is better for coding tasks. It scores 49.1% on coding evaluations (swe-bench-pro) compared to Grok 4.3 which scores N/A.

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