Rate
Claude Opus 5.5 vs DeepSeek V4 Pro: price
DeepSeek V4 Pro is 4.0× cheaper than Claude Opus 5.5 for a typical chat workload (1,500 tokens in, 500 out).
| Item | Claude Opus 5.5 | DeepSeek V4 Pro |
|---|---|---|
| Input per 1M tokens | $4.00 | $1.32 |
| Output per 1M tokens | $20.00 | $3.96 |
| Cached input per 1M | $0.20 | $0.044 |
| 1,000 chat messages1,500 tokens in, 500 out each | $16.00 | $3.96 |
| Summarize a 50-page PDF30,000 tokens in, 1,000 out | $0.14 | $0.044 |
| One coding-agent task60,000 tokens in, 4,000 out, no caching | $0.32 | $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 Opus 5.5 vs DeepSeek V4 Pro in numbers
Output, usually the bigger part of the bill, costs $20.00 on Claude Opus 5.5 and $3.96 on DeepSeek V4 Pro, so DeepSeek V4 Pro is 5.1× cheaper there. Input costs $4.00 versus $1.32 per million tokens. For a coding-agent task (60,000 tokens in, 4,000 out) that is $0.32 on Claude Opus 5.5 and $0.095 on DeepSeek V4 Pro. Both accept up to 1M tokens of context. Claude Opus 5.5 came out on September 22, 2026 and DeepSeek V4 Pro on August 13, 2026.
Claude Opus 5.5 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 Opus 5.5Anthropic
–no votes yet - DeepSeek V4 ProDeepSeek–no votes yet
Frequently asked questions
Is Claude Opus 5.5 or DeepSeek V4 Pro cheaper?
DeepSeek V4 Pro is 4.0× cheaper than Claude Opus 5.5 for a typical chat workload (1,500 tokens in, 500 out). Output, usually the bigger part of the bill, costs $20.00 on Claude Opus 5.5 and $3.96 on DeepSeek V4 Pro, so DeepSeek V4 Pro is 5.1× cheaper there.
Which is better, Claude Opus 5.5 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 Opus 5.5 and DeepSeek V4 Pro pages, and read what users report in Discussions.