Claude Sonnet 5 vs DeepSeek V4 Pro: price

DeepSeek V4 Pro is 2.0× cheaper than Claude Sonnet 5 for a typical chat workload (1,500 tokens in, 500 out).

Item	Claude Sonnet 5	DeepSeek V4 Pro
Input per 1M tokens	$2.00	$1.32
Output per 1M tokens	$10.00	$3.96
Cached input per 1M	$0.20	$0.044
1,000 chat messages1,500 tokens in, 500 out each	$8.00	$3.96
Summarize a 50-page PDF30,000 tokens in, 1,000 out	$0.07	$0.044
One coding-agent task60,000 tokens in, 4,000 out, no caching	$0.16	$0.095

DeepSeek V4 Pro: Peak-hour price (weekdays 01:00–04:00 and 06:00–10:00 UTC). Off-peak: $0.66 in / $1.98 out.

List prices checked September 28, 2026. Price is half the story: see how people rate each one today.

Claude Sonnet 5 vs DeepSeek V4 Pro in numbers

Output, usually the bigger part of the bill, costs $10.00 on Claude Sonnet 5 and $3.96 on DeepSeek V4 Pro, so DeepSeek V4 Pro is 2.5× cheaper there. Input costs $2.00 versus $1.32 per million tokens. For a coding-agent task (60,000 tokens in, 4,000 out) that is $0.16 on Claude Sonnet 5 and $0.095 on DeepSeek V4 Pro. Both accept up to 1M tokens of context. Claude Sonnet 5 came out on June 30, 2026 and DeepSeek V4 Pro on August 13, 2026.

Claude Sonnet 5 is made by Anthropic; DeepSeek V4 Pro by DeepSeek. Estimate your own bill for both in the cost calculator.

Which one feels dumber today?

Claude Sonnet 5Anthropic
–no votes yet
DeepSeek V4 ProDeepSeek
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Frequently asked questions

Is Claude Sonnet 5 or DeepSeek V4 Pro cheaper?

DeepSeek V4 Pro is 2.0× cheaper than Claude Sonnet 5 for a typical chat workload (1,500 tokens in, 500 out). Output, usually the bigger part of the bill, costs $10.00 on Claude Sonnet 5 and $3.96 on DeepSeek V4 Pro, so DeepSeek V4 Pro is 2.5× cheaper there.

Which is better, Claude Sonnet 5 or DeepSeek V4 Pro?

It depends on the task, and price is only part of it. Check how people rate each one today on the Claude Sonnet 5 and DeepSeek V4 Pro pages, and read what users report in Discussions.