DeepSeek Chat V3 vs OpenAI o1 Pro

Performance benchmarks + pricing comparison — updated April 2026

DeepSeek Chat V3

DeepSeek

Very affordable general-purpose model from DeepSeek. Strong coding and reasoning at low cost.

Input$0.270/M
Output$1.10/M
Context128K tokens
Best ForCost-sensitive projects, coding, general tasks
Benchmark62/100

OpenAI o1 Pro

OpenAI

Premium reasoning model with extended compute. Best-in-class for complex math, science, and advanced coding challenges.

Input$20.00/M
Output$80.00/M
Context200K tokens
Best ForResearch-grade problem solving, competition math, complex system design

Cost Comparison by Scenario

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

ScenarioDeepSeek Chat V3OpenAI o1 ProSavings
Small Script (1K lines) $0.04 $3.10 DeepSeek Chat V3 saves $3.06 (99%)
Medium Feature (10K lines) $0.31 $23.00 DeepSeek Chat V3 saves $22.69 (99%)
Large Project (50K lines) $1.57 $115.00 DeepSeek Chat V3 saves $113.43 (99%)
Code Review (5K lines) $0.07 $5.50 DeepSeek Chat V3 saves $5.43 (99%)

Verdict

DeepSeek Chat V3 wins on both price and performance — $0.270/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

Compare with Other Models