DeepSeek V4.1 Flash 1017 vs Hy4
Detailed technical comparison between DeepSeek V4.1 Flash 1017 (DeepSeek) and Hy4 (Tencent). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
Tie
Equal CapacityTie
Equal CapabilityTie
Equal SpeedDeepSeek V4.1 Flash 1017
$0.15 / MTokDeepSeek V4.1 Flash 1017
DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name. V4.1 Flash is a sparse mixture-of-experts model...
Hy4
The official release of Hy4 delivers comprehensive and substantial improvements over Hy4 Preview, with particularly strong gains in agentic capabilities and performance across a wide range of long-horizon, real-world productivity...
Technical Specifications
🏆 = Superior Spec| Specification | DeepSeek V4.1 Flash 1017 | Hy4 |
|---|---|---|
| Provider | DeepSeek | Tencent |
| Context Window | 1,048,576 tokens | 1,048,576 tokens |
| Agent Suitability | Not yet benchmarked | Not yet benchmarked |
| Time to First Token (TTFT) | No public TTFT data | No public TTFT data |
| Deployment Model | self hostable | managed api |
| Production Stability | Not verified | Not verified |
| API Available | Yes | Yes |
| Released Date | 2026-10-17 | 2026-11-04 |
API Pricing Comparison
Input Price per Million Tokens
DeepSeek V4.1 Flash 1017
$0.15
Hy4
$0.42
Output Price per Million Tokens
DeepSeek V4.1 Flash 1017
$0.60
Hy4
$1.25
💡 Cost Ratio: DeepSeek V4.1 Flash 1017 is 2.8x cheaper per input token than Hy4.
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Benchmark Performance Metrics
Standardized Scores (0–100%)Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.
DeepSeek V4.1 Flash 1017 Quirks & Gotchas
No developer gotchas reported.
Hy4 Quirks & Gotchas
No developer gotchas reported.
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