DeepSeek-V4-Pro-0813 vs GPT-5.5
API pricing, benchmark indices and specs — updated 19 October 2026.
deepseek-ai · A · Open weights
Params
1,650.5 B
Context
1,048,576
30d
150 K
mit · commercial OK
openai · B · API-only
Input / 1M
$5.00
Output / 1M
$30.00
AA index
38.4
proprietary · 1.0M context
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | DeepSeek-V4-Pro-0813 | GPT-5.5 |
|---|---|---|
| Deployment | Open weights · also via API | API-only (closed weights) |
| Parameters | 1,650.5 B | n/a — API-only |
| Architecture | DeepseekV4ForCausalLM | n/a — API-only |
| Context length | 1,048,576 | 1,050,000 |
| Licence | mit | Proprietary |
| Commercial use | Allowed | Per API terms |
| Languages | — | n/a — API-only |
| Downloads 30d | 150,373 | n/a — API-only |
| Downloads all time | 380 K | n/a — API-only |
| Quantizations on the Hub | SAFETENSORS | n/a — API-only |
| Gated | No | n/a — API-only |
| First seen on the Hub | 2026-08-13 | n/a — API-only |
| API input price / 1M tokens | $0.66 | $5.00 |
| API output price / 1M tokens | $1.98 | $30.00 |
| Est. cost per 1M input + 1M output tokens | $2.64 | $35.00 |
| Cached input / 1M tokens | $0.022 | $0.50 |
| AA Intelligence Index | 36 | 38.4 |
| AA Coding Index | 68.8 | 74.9 |
| AA Agentic Index | 41.3 | 36.4 |
| Max output tokens | 393,216 | 128,000 |
| API providers | 21 | 3 |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
DeepSeek-V4-Pro-0813
$2.64
GPT-5.5
$35.00
DeepSeek-V4-Pro-0813 is 13.3× cheaper at list price.
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
DeepSeek-V4-Pro-0813 · fp16 @ 1024K ctx
32,672.1 GB / 24 GB