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DeepSeek R2 vs o4
DeepSeek vs OpenAI. Specs, benchmarks, and real per-task cost — all in one page.
Verdict
DeepSeek R2 is ~27.3× cheaper on a 3:1 input:output blend. DeepSeek R2 is open-weights, the other is proprietary.
DeepSeek
DeepSeek R2DeepSeek’s reasoning variant. Competes with o4 on math at a fraction of the cost.
Frontier math at open-weights pricingLong CoT traces
OpenAI
o4Deep-reasoning model. Spends more tokens thinking to crush math, science, and hard coding problems.
State-of-the-art math and scienceExtremely high-ceiling reasoning
Pricing
Input / 1M$0.55$15.00
Output / 1M$2.19$60.00
Context128K200K
Max output64K100K
LicenseOpen weightsProprietary
Released2026-01-152026-02-18
Benchmarks
MMLU Pro87.893.8
HumanEval90.192.3
SWE-Bench—68.0
MATH94.196.2
GPQA71.282.5
Per-task cost
Summarize a 1-hour meeting transcript$0.0093$0.255
Review a 500-line pull request$0.0088$0.240
Answer a customer support ticket$0.0034$0.093
Extract structured data from a resume$0.0049$0.135
Debug a stack trace with context$0.0077$0.210
Per-call cost using published token counts for each task. Real-world prompts vary.