Compare/DeepSeek V4 Pro (Reasoning, High Effort) vs gpt-oss-20B (high)

DeepSeek V4 Pro (Reasoning, High Effort)vsgpt-oss-20B (high)

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

DeepSeek

DeepSeek V4 Pro (Reasoning, High Effort)

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

gpt-oss-20B (high)

Input
$0.07/M
Output
$0.2/M
Speed
295 tok/s
TTFT
0.36s

Winner by Category

Cheaper
DeepSeek V4 Pro (Reasoning, High Effort)
Faster (tok/s)
gpt-oss-20B (high)
Lower Latency
DeepSeek V4 Pro (Reasoning, High Effort)
Benchmarks (4-7)
gpt-oss-20B (high)

Pricing Comparison

MetricDeepSeek V4 Pro (Reasoning, High Effort)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 (Reasoning, High Effort)$0.00
gpt-oss-20B (high)$0.09

Speed Comparison

Output Speed (tokens/s) — higher is better
DeepSeek V4 Pro (Reasoning, High Effort)
gpt-oss-20B (high)
295 tok/s
Time to First Token (seconds) — lower is better
DeepSeek V4 Pro (Reasoning, High Effort)
gpt-oss-20B (high)
0.36s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
24.5
Coding Index
18.5
Math Index
89.3
GPQA Diamond
90.5%68.8%
MMLU-Pro
74.8%
LiveCodeBench
77.7%
AIME 2025
89.3%
MATH-500
Humanity's Last Exam
33.5%9.8%
SciCode
46.4%34.4%
IFBench
71.3%65.1%
TerminalBench
10.6%
DeepSeek V4 Pro (Reasoning, High Effort)4 wins
7 winsgpt-oss-20B (high)

Frequently Asked Questions

Which is cheaper, DeepSeek V4 Pro (Reasoning, High Effort) or gpt-oss-20B (high)?

DeepSeek V4 Pro (Reasoning, High Effort) 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 7 out of 12 benchmarks compared to 4 for DeepSeek V4 Pro (Reasoning, High Effort). 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 295 tok/s vs 0 tok/s. DeepSeek V4 Pro (Reasoning, High Effort) also has lower time-to-first-token (0.00s vs 0.36s).

When should I use DeepSeek V4 Pro (Reasoning, High Effort) vs gpt-oss-20B (high)?

Choose based on your priorities: DeepSeek V4 Pro (Reasoning, High Effort) 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.