Very long inputs
Choose DeepSeek V4 Pro
DeepSeek V4 Pro reads up to 1M tokens per request, against 400k for GPT-5.6 Cyber.
DeepSeek V4 Pro vs GPT-5.6 Cyber: price, context and capabilities
Choose DeepSeek V4 Pro for very long inputs. Choose GPT-5.6 Cyber for images as input.
In short
- A price comparison is not possible: one of them has no comparable published price.
- DeepSeek V4 Pro reads more per request: 1M tokens against 400k.
- Only DeepSeek V4 Pro offers prompt caching.
- Only GPT-5.6 Cyber offers vision, batch api.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Images as input
Choose GPT-5.6 Cyber
GPT-5.6 Cyber accepts images as input; DeepSeek V4 Pro does not.
Specifications side by side
| DeepSeek V4 Pro | GPT-5.6 Cyber | |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Generally available · Limited access |
| Headline price | $1.98 / 1M tokens | No data |
| Input | $1.32 / 1M tokens | No data |
| Output | $3.96 / 1M tokens | No data |
| Cached input | $0.044 / 1M tokens | No data |
| Context window | 1M | 400k |
| Max output | 384k | 128k |
| Released | August 2026 | Aug 7, 2026 |
| Knowledge cutoff | No data | February 2026 |
| Licence | Proprietary | Proprietary |
| Capabilities | Reasoning, Tool calling, Structured output, Prompt caching | Vision, Reasoning, Tool calling, Structured output, Batch API |
| API model id | deepseek-v4-pro | gpt-5.6-cyber |
Benchmarks side by side
Leader in bold.
| Benchmark | DeepSeek V4 Pro | GPT-5.6 Cyber |
|---|---|---|
| Intelligence Index | 36 | No data |
| SciCode | 51% | No data |
| GPQA Diamond | 92.8% | No data |
| Humanity's Last Exam | 41% | No data |
| Long-context reasoning (AA-LCR) | 80.3% | No data |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose DeepSeek V4 Pro or GPT-5.6 Cyber?
Choose DeepSeek V4 Pro for very long inputs. Choose GPT-5.6 Cyber for images as input.
Which is cheaper, DeepSeek V4 Pro or GPT-5.6 Cyber?
A price comparison is not possible: one of them has no comparable published price.
Which has the larger context window, DeepSeek V4 Pro or GPT-5.6 Cyber?
DeepSeek V4 Pro reads more per request: 1M tokens against 400k.
What is the difference between DeepSeek V4 Pro and GPT-5.6 Cyber?
DeepSeek V4 Pro is made by DeepSeek and GPT-5.6 Cyber by OpenAI. A price comparison is not possible: one of them has no comparable published price. DeepSeek V4 Pro reads more per request: 1M tokens against 400k. Only DeepSeek V4 Pro offers prompt caching. Only GPT-5.6 Cyber offers vision, batch api.