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DeepSeek: DeepSeek V4 Pro 0813 vs OpenAI: GPT-5.6 Terra Pro

On input price, DeepSeek: DeepSeek V4 Pro 0813 is ~3.0× cheaper. Verified 2026-10-21.

DeepSeek: DeepSeek V4 Pro 0813 $0.660/$1.98vsOpenAI: GPT-5.6 Terra Pro $2.00/$12.00

Verdict

On blended price (3:1 input:output), DeepSeek: DeepSeek V4 Pro 0813 is ~4.5× cheaper ($0.660/$1.98 vs $2.00/$12.00 per 1M tokens). OpenAI: GPT-5.6 Terra Pro scores higher on intelligence (57 vs 53, Artificial Analysis) — pay more only if that gap matters for your workload.

Pricing

Per-million-token list prices, verified 2026-10-21. Green marks the better value.

MetricDeepSeek: DeepSeek V4 Pro 0813OpenAI: GPT-5.6 Terra Pro
Input / 1M$0.660$2.00
Output / 1M$1.98$12.00
Cache read / 1M$0.022$0.200
Blended (3:1)$0.990/1M$4.50/1M
Estimated monthly costDeepSeek: DeepSeek V4 Pro 0813OpenAI: GPT-5.6 Terra Pro
Chatbot10,000 reqs · 800/400 tok$13.20$64.00
Coding agent5,000 reqs · 8000/2000 tok$46.20$200.00
RAG pipeline30,000 reqs · 4000/500 tok$108.90$420.00

Plug in your own numbers in the calculator, or paste a real bill into the Bill Shredder.

Specifications & capabilities

MetricDeepSeek: DeepSeek V4 Pro 0813OpenAI: GPT-5.6 Terra Pro
Context window1.0M1.1M
Max output384K128K
Vision input–✓
Tool calling✓✓
Reasoning✓✓

Quality

Intelligence Index by Artificial Analysis (independent evaluations, 0–100).

Intelligence Index — higher is better
DeepSeek: DeepSeek V4 Pro 081353
OpenAI: GPT-5.6 Terra Pro57

Sources: DeepSeek: DeepSeek V4 Pro 0813 on Artificial Analysis · OpenAI: GPT-5.6 Terra Pro on Artificial Analysis

Performance

Measured by Artificial Analysis on live endpoints.

Output speed — higher is better
DeepSeek: DeepSeek V4 Pro 0813115 tok/s
OpenAI: GPT-5.6 Terra Pro80 tok/s
Latency (TTFT) — lower is better
DeepSeek: DeepSeek V4 Pro 0813850 ms
OpenAI: GPT-5.6 Terra Pro1,300 ms
MetricDeepSeek: DeepSeek V4 Pro 0813OpenAI: GPT-5.6 Terra Pro
Cost per task$0.000007$0.000016

Provider

Infrastructure metrics for the organizations behind these models.

MetricDeepSeekOpenAI
Listed endpoints612
Reliability99.6%99.9%
Avg latency480 ms450 ms
Pricing tiersstandard, freestandard, batch, provisioned

Full details: DeepSeek: DeepSeek V4 Pro 0813 pricing · OpenAI: GPT-5.6 Terra Pro pricing