DeepSeek Chat V3 vs O1 Preview

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

O1 Preview

OpenAI

OpenAI's first reasoning model. Strong at complex problem solving but expensive.

Input$15.00/M
Output$60.00/M
Context128K tokens
Best ForComplex math, science, algorithm design

Cost Comparison by Scenario

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

ScenarioDeepSeek Chat V3O1 PreviewSavings
Small Script (1K lines) $0.04 $2.32 DeepSeek Chat V3 saves $2.28 (98%)
Medium Feature (10K lines) $0.31 $17.25 DeepSeek Chat V3 saves $16.94 (98%)
Large Project (50K lines) $1.57 $86.25 DeepSeek Chat V3 saves $84.68 (98%)
Code Review (5K lines) $0.07 $4.13 DeepSeek Chat V3 saves $4.05 (98%)

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