Compare/DeepSeek-V2-Chat vs gpt-oss-120B (high)

DeepSeek-V2-Chatvsgpt-oss-120B (high)

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

DeepSeek

DeepSeek-V2-Chat

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

gpt-oss-120B (high)

Input
$0.15/M
Output
$0.6/M
Speed
235 tok/s
TTFT
0.50s

Winner by Category

Cheaper
DeepSeek-V2-Chat
Faster (tok/s)
gpt-oss-120B (high)
Lower Latency
DeepSeek-V2-Chat
Benchmarks (0-11)
gpt-oss-120B (high)

Pricing Comparison

MetricDeepSeek-V2-Chatgpt-oss-120B (high)
Input ($/M tokens)$0$0.15
Output ($/M tokens)$0$0.6
Cost for 1M input + 100K output tokens:
DeepSeek-V2-Chat$0.00
gpt-oss-120B (high)$0.21

Speed Comparison

Output Speed (tokens/s) — higher is better
DeepSeek-V2-Chat
gpt-oss-120B (high)
235 tok/s
Time to First Token (seconds) — lower is better
DeepSeek-V2-Chat
gpt-oss-120B (high)
0.50s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
9.133.3
Coding Index
28.6
Math Index
93.4
GPQA Diamond
78.2%
MMLU-Pro
80.8%
LiveCodeBench
87.8%
AIME 2025
93.4%
MATH-500
Humanity's Last Exam
18.5%
SciCode
38.9%
IFBench
69.0%
TerminalBench
23.5%
DeepSeek-V2-Chat0 wins
11 winsgpt-oss-120B (high)

Frequently Asked Questions

Which is cheaper, DeepSeek-V2-Chat or gpt-oss-120B (high)?

DeepSeek-V2-Chat is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $0.26/M for gpt-oss-120B (high).

Which model performs better on benchmarks?

gpt-oss-120B (high) wins 11 out of 12 benchmarks compared to 0 for DeepSeek-V2-Chat. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

gpt-oss-120B (high) generates tokens faster at 235 tok/s vs 0 tok/s. DeepSeek-V2-Chat also has lower time-to-first-token (0.00s vs 0.50s).

When should I use DeepSeek-V2-Chat vs gpt-oss-120B (high)?

Choose based on your priorities: DeepSeek-V2-Chat for lower cost, gpt-oss-120B (high) for stronger benchmark performance, and gpt-oss-120B (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.