GPT-5.6 Terra vs DeepSeek V4 Pro: scores, price and which to pick

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Our take

DeepSeek V4 Pro wins 3 of 4 categories and costs less: 2.3× cheaper for everyday text work. Easy pick.

Overall60Best53

Coding5456Best

Writing5361Best

Support5759Best

Value50Best47

Input / 1M$2.00$1.32Best

Output / 1M$12.00$3.96Best

Blended / 1M$4.50$1.98Best

Context window1.1MBest1M

Open weightsNoYes

Released9 Jul 202613 Aug 2026

Your monthly bill

Tasks per month50k

GPT-5.6 Terra$900

DeepSeek V4 Pro$396Cheapest

List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.