Compare · ModelsLive · 2 picked · head to head
DeepSeek V4 Flash 0731 vs gpt-oss-120b
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
DeepSeek V4 Flash 0731 wins on 9/9 benchmarks
DeepSeek V4 Flash 0731 wins 9 of 9 shared benchmarks. Leads in knowledge · general · math.
Category leads
knowledge·DeepSeek V4 Flash 0731general·DeepSeek V4 Flash 0731math·DeepSeek V4 Flash 0731reasoning·DeepSeek V4 Flash 0731coding·DeepSeek V4 Flash 0731
Hype vs Reality
Attention vs performance
DeepSeek V4 Flash 0731
#76 by perf·#6 by attention
gpt-oss-120b
#127 by perf·no signal
Best value
gpt-oss-120b
5.6x better value than DeepSeek V4 Flash 0731
DeepSeek V4 Flash 0731
85.5 pts/$
$0.65/M
gpt-oss-120b
475.4 pts/$
$0.10/M
Vendor risk
Mixed exposure
One or more vendors flagged
DeepSeek
$3.4B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
9 benchmarks · 2 models
DeepSeek V4 Flash 0731gpt-oss-120b
Chess Puzzles
DeepSeek V4 Flash 0731 leads by +13.7
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
DeepSeek V4 Flash 0731
29.5
gpt-oss-120b
15.8
Dtbench
DeepSeek V4 Flash 0731 leads by +24.4
DeepSeek V4 Flash 0731
84.9
gpt-oss-120b
60.5
GPQA diamond
DeepSeek V4 Flash 0731 leads by +20.4
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
DeepSeek V4 Flash 0731
88.0
gpt-oss-120b
67.7
Lmca
DeepSeek V4 Flash 0731 leads by +23.0
DeepSeek V4 Flash 0731
49.1
gpt-oss-120b
26.1
Mystery Game Puzzles
DeepSeek V4 Flash 0731 leads by +27.3
DeepSeek V4 Flash 0731
27.3
gpt-oss-120b
0.0
OTIS Mock AIME 2024-2025
DeepSeek V4 Flash 0731 leads by +5.6
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
DeepSeek V4 Flash 0731
94.4
gpt-oss-120b
88.9
SimpleBench
DeepSeek V4 Flash 0731 leads by +46.8
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
DeepSeek V4 Flash 0731
53.3
gpt-oss-120b
6.5
SimpleQA Verified
DeepSeek V4 Flash 0731 leads by +19.7
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
DeepSeek V4 Flash 0731
33.6
gpt-oss-120b
13.9
WeirdML
DeepSeek V4 Flash 0731 leads by +14.8
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
DeepSeek V4 Flash 0731
63.0
gpt-oss-120b
48.2
Full benchmark table
| Benchmark | DeepSeek V4 Flash 0731 | gpt-oss-120b |
|---|---|---|
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 29.5 | 15.8 |
Dtbench | 84.9 | 60.5 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 88.0 | 67.7 |
Lmca | 49.1 | 26.1 |
Mystery Game Puzzles | 27.3 | 0.0 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 94.4 | 88.9 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 53.3 | 6.5 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 33.6 | 13.9 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 63.0 | 48.2 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.02 | $1.28 | 1.0M tokens (~524 books) | $3.31 | |
| $0.04 | $0.17 | 131K tokens (~66 books) | $0.70 |