Model Comparison

V4 Pro (Reasoning, Max Effort)
vs. gpt-oss-120b (high)

Comparing 2 AI models · 10 benchmarks · DeepSeek, OpenAI

Recommended Pick

DeepSeek logo V4 Pro (Reasoning, Max Effort) 9 metric wins

Strongest on: Intelligence, Coding, GPQA

Best Value

OpenAI logo

gpt-oss-120b (high)

100.0 value score

63.4 reasoning / $0.26/1M

Lowest Price

OpenAI logo

gpt-oss-120b (high)

$0.15/1M input price

Best Reasoning

OpenAI logo

gpt-oss-120b (high)

63.4 reasoning score

Blends available reasoning benchmarks

Best for Coding

DeepSeek logo

V4 Pro (Reasoning, Max Effort)

47.5 coding index

Composite Indices

Higher is better; speed and price are normalized

Standard Benchmarks

Only benchmarks with data are shown

Differences That Matter

Best value

gpt-oss-120b (high) has the strongest quality-to-price mix at 100.0 out of 100 value points.

Price gap

gpt-oss-120b (high) is 2.9x cheaper on input tokens than V4 Pro (Reasoning, Max Effort).

Speed gap

gpt-oss-120b (high) generates about 6.4x as many tokens per second as V4 Pro (Reasoning, Max Effort).

Reasoning gap

gpt-oss-120b (high) leads V4 Pro (Reasoning, Max Effort) by 4.6 points on reasoning.

Coding gap

V4 Pro (Reasoning, Max Effort) leads gpt-oss-120b (high) by 18.9 points on coding.

Live compare

Response Face-Off

Run one prompt through the selected models and compare response quality with live speed and cost context.

DeepSeek logo

V4 Pro (Reasoning, Max Effort)

DeepSeek

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting
OpenAI logo

gpt-oss-120b (high)

OpenAI

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting

Which answer was more useful?

AI Chat

Chat with 80+ models

Inference API

EU-hosted inference

Full Comparison

Metric
Top Pick
DeepSeek logo V4 Pro (Reasoning, Max Effort)
DeepSeek
OpenAI logo gpt-oss-120b (high)
OpenAI
Pricing per 1M tokens
Input Cost $0.43/1M$0.15/1M
Output Cost $0.87/1M$0.60/1M
Blended (3:1) $0.54/1M$0.26/1M
Specifications
Organization DeepSeekOpenAI
Release Date Apr 24, 2026Aug 5, 2025
Performance & Speed
Throughput 55.5 tok/s352.2 tok/s
TTFT 1062ms519ms
Latency 79959ms6198ms
Composite Indices
Value Score 44.7100.0
Reasoning Score 58.763.4
Intelligence 51.533.3
Coding 47.528.6
Math 93.4
Standard Benchmarks
GPQA 88.8%78.2%
MMLU Pro 80.8%
HLE 35.9%18.5%
LiveCodeBench 87.8%
AIME 2025 93.4%
SciCode 50.0%38.9%
LCR 66.3%50.7%
IFBench 76.5%69.0%
TAU-bench v2 96.2%65.8%
TerminalBench Hard 46.2%23.5%

Key Takeaways

gpt-oss-120b (high) offers the best value at $0.15/1M, making it ideal for high-volume applications and cost-conscious projects.

gpt-oss-120b (high) has the strongest reasoning profile with a 63.4 reasoning score, combining the available reasoning-heavy benchmarks.

V4 Pro (Reasoning, Max Effort) reaches a 47.5 coding index, making it the top choice for software development and code generation tasks.

All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.

When to Choose Each Model

DeepSeek logo

V4 Pro (Reasoning, Max Effort)

  • Code generation
  • Software development
OpenAI logo

gpt-oss-120b (high)

  • Cost-sensitive applications
  • High-volume processing
  • Complex reasoning tasks
  • Research & analysis