DeepSeek-R1-0528 vs GPT-5 Nano
API pricing, benchmark indices and specs — updated 20 October 2026.
deepseek-ai · A · Open weights
Params
684.5 B
Context
163,840
30d
166 K
mit · commercial OK
openai · B · API-only
Input / 1M
$0.05
Output / 1M
$0.40
AA index
13
proprietary · 400K context
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | DeepSeek-R1-0528 | GPT-5 Nano |
|---|---|---|
| Deployment | Open weights · also via API | API-only (closed weights) |
| Parameters | 684.5 B | n/a — API-only |
| Architecture | DeepseekV3ForCausalLM | n/a — API-only |
| Context length | 163,840 | 400,000 |
| Licence | mit | Proprietary |
| Commercial use | Allowed | Per API terms |
| Languages | — | n/a — API-only |
| Downloads 30d | 166,405 | n/a — API-only |
| Downloads all time | 17.0 M | n/a — API-only |
| Quantizations on the Hub | SAFETENSORS | n/a — API-only |
| Gated | No | n/a — API-only |
| First seen on the Hub | 2025-05-28 | n/a — API-only |
| API input price / 1M tokens | $0.50 | $0.05 |
| API output price / 1M tokens | $2.15 | $0.40 |
| Est. cost per 1M input + 1M output tokens | $2.65 | $0.45 |
| Cached input / 1M tokens | $0.35 | $0.005 |
| AA Intelligence Index | 13.1 | 13 |
| AA Coding Index | — | — |
| AA Agentic Index | — | — |
| Max output tokens | 32,768 | 128,000 |
| API providers | 3 | 2 |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
DeepSeek-R1-0528
$2.65
GPT-5 Nano
$0.45
GPT-5 Nano is 5.9× cheaper at list price.
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
DeepSeek-R1-0528 · fp16 @ 160K ctx
2,811.5 GB / 24 GB