Key Takeaways
DeepSeek V3.1 wins:
- Cheaper input tokens
- Cheaper output tokens
GPT-5 wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
- Supports vision
Price Advantage
DeepSeek V3.1
Benchmark Advantage
GPT-5
Context Window
GPT-5
Speed
GPT-5
Pricing Comparison
Price Comparison
| Metric | DeepSeek V3.1 | GPT-5 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.15 | $1.25 | DeepSeek V3.1 |
| Output (per 1M tokens) | $0.75 | $10.00 | DeepSeek V3.1 |
| Cache Read (per 1M) | N/A | $0.13 | GPT-5 |
Using a 3:1 input/output ratio, DeepSeek V3.1 is 91% cheaper overall.
DeepSeek V3.1 Providers
Chutes $0.20 (Cheapest)
DeepInfra $0.21
SiliconFlow $0.27
Novita $0.27
AtlasCloud $0.30
GPT-5 Providers
OpenAI $1.25 (Cheapest)
Azure $1.25 (Cheapest)
Benchmark Comparison
8
Benchmarks Compared
0
DeepSeek V3.1 Wins
6
GPT-5 Wins
Benchmark Scores
| Benchmark | DeepSeek V3.1 | GPT-5 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 28.1 | 44.6 | |
Coding Index Code generation & understanding | 28.4 | 36.0 | |
Math Index Mathematical reasoning | 49.7 | 94.3 | |
MMLU Pro Academic knowledge | 83.3 | 87.1 | |
GPQA Graduate-level science | 73.5 | 85.4 | |
LiveCodeBench Competitive programming | 57.7 | 84.6 | |
Aider Real-world code editing | - | 88.0 | - |
AIME Competition math | - | 95.7 | - |
GPT-5 significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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DeepSeek V3.1
Other models
Context & Performance
Context Window
DeepSeek V3.1
32,768
tokens
Max output: 7,168 tokens
GPT-5
400,000
tokens
Max output: 128,000 tokens
GPT-5 has a 92% larger context window.
Speed Performance
| Metric | DeepSeek V3.1 | GPT-5 | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 94.0 tok/s | |
| Time to First Token | 0.00s | 102.36s |
GPT-5 responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | DeepSeek V3.1 | GPT-5 |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | DeepSeek V3.1 | GPT-5 |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Deepseek | OpenAI |
| Released | Aug 2025 | Aug 2025 |
DeepSeek V3.1 Modalities
Input
text
Output
text
GPT-5 Modalities
Input
textimagefile
Output
text