Compare/DeepSeek V4 Pro (Non-reasoning) vs gpt-oss-20B (high)

DeepSeek V4 Pro (Non-reasoning)vsgpt-oss-20B (high)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

DeepSeek

DeepSeek V4 Pro (Non-reasoning)

Input
$0/M
Output
$0/M
Speed
TTFT
OpenAI

gpt-oss-20B (high)

Input
$0.07/M
Output
$0.2/M
Speed
242 tok/s
TTFT
0.32s

Winner by Category

Cheaper
DeepSeek V4 Pro (Non-reasoning)
Faster (tok/s)
gpt-oss-20B (high)
Lower Latency
DeepSeek V4 Pro (Non-reasoning)
Benchmarks (5-6)
gpt-oss-20B (high)

Pricing Comparison

MetricDeepSeek V4 Pro (Non-reasoning)gpt-oss-20B (high)
Input ($/M tokens)$0$0.07
Output ($/M tokens)$0$0.2
Cost for 1M input + 100K output tokens:
DeepSeek V4 Pro (Non-reasoning)$0.00
gpt-oss-20B (high)$0.09

Speed Comparison

Output Speed (tokens/s) — higher is better
DeepSeek V4 Pro (Non-reasoning)
gpt-oss-20B (high)
242 tok/s
Time to First Token (seconds) — lower is better
DeepSeek V4 Pro (Non-reasoning)
gpt-oss-20B (high)
0.32s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
39.324.5
Coding Index
38.418.5
Math Index
89.3
GPQA Diamond
71.7%68.8%
MMLU-Pro
74.8%
LiveCodeBench
77.7%
AIME 2025
89.3%
MATH-500
Humanity's Last Exam
7.7%9.8%
SciCode
42.4%34.4%
IFBench
45.8%65.1%
TerminalBench
36.4%10.6%
DeepSeek V4 Pro (Non-reasoning)5 wins
6 winsgpt-oss-20B (high)

Frequently Asked Questions

Which is cheaper, DeepSeek V4 Pro (Non-reasoning) or gpt-oss-20B (high)?

DeepSeek V4 Pro (Non-reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $0.10/M for gpt-oss-20B (high).

Which model performs better on benchmarks?

gpt-oss-20B (high) wins 6 out of 12 benchmarks compared to 5 for DeepSeek V4 Pro (Non-reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

gpt-oss-20B (high) generates tokens faster at 242 tok/s vs 0 tok/s. DeepSeek V4 Pro (Non-reasoning) also has lower time-to-first-token (0.00s vs 0.32s).

When should I use DeepSeek V4 Pro (Non-reasoning) vs gpt-oss-20B (high)?

Choose based on your priorities: DeepSeek V4 Pro (Non-reasoning) for lower cost, gpt-oss-20B (high) for stronger benchmark performance, and gpt-oss-20B (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.