DeepSeek-V4-Pro-0813 vs Gemini 3.5 Flash

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
google · B · API-only
Input / 1M
$1.50
Output / 1M
$9.00
AA index
33.6
proprietary · 1M context

Specification comparison

Differences are highlighted; identical values are muted.

Specification DeepSeek-V4-Pro-0813 Gemini 3.5 Flash
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 1,048,576
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 $1.50
API output price / 1M tokens $1.98 $9.00
Est. cost per 1M input + 1M output tokens $2.64 $10.50
Cached input / 1M tokens $0.022 $0.15
AA Intelligence Index 36 33.6
AA Coding Index 68.8 —
AA Agentic Index 41.3 —
Max output tokens 393,216 65,536
API providers 21 2
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
Gemini 3.5 Flash $10.50

DeepSeek-V4-Pro-0813 is 4.0× 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
❌ Won’t fit

Adjacent comparisons