Updated April 2026 · Independent Analysis
DeepSeek V3vsOpenAI o1
DeepSeek V3 is free; OpenAI o1 starts at $20/mo. OpenAI o1 is rated higher at 4.6/5 vs DeepSeek V3's 4.4/5.
DeepSeek V3vs OpenAI o1
★ 4.4/5-0.2 vs OpenAI o1
Only in DeepSeek V3
- ✦ 128K context window
- ✦ Open weights
- ✦ Code generation
✓ Free plan5M+ users · est. 2024
Try DeepSeek V3 Free →
OpenAI o1vs DeepSeek V3
★ 4.6/5+0.2 vs DeepSeek V3
Only in OpenAI o1
- ✦ Chain-of-thought reasoning
- ✦ PhD-level science
- ✦ Advanced math
From $20/mo10M+ users · est. 2024
Try OpenAI o1 Free →Ratings Breakdown
DeepSeek V3
4.4/5 avg
G2 Score4.4/5
Capterra Score4.3/5
G2 Rating4.4/5
OpenAI o1
4.6/5 avg
G2 Score4.6/5
Capterra Score4.5/5
G2 Rating4.6/5
Quick Stats
Feature Comparison
DeepSeek V3 uniquely offers 128K context window, Open weights, Code generation. OpenAI o1 uniquely offers Chain-of-thought reasoning, PhD-level science, Advanced math. Both share 7 features including API access, Function calling, JSON mode.
Feature
DeepSeek V3
OpenAI o1
API access
✓
✓
Function calling
✓
✓
JSON mode
✓
✓
Streaming
✓
✓
System prompts
✓
✓
Tool use
✓
✓
Document analysis
✓
✓
128K context window
✓
✗
Open weights
✓
✗
Code generation
✓
✗
Multi-language
✓
✗
Math reasoning
✓
✗
Scientific analysis
✓
✗
Mixture of Experts
✓
✗
Cost-efficient inference
✓
✗
Self-hosted option
✓
✗
Real-time data (web)
✓
✗
Batch processing
✓
✗
Concurrent requests
✓
✗
Vision (V3-turbo)
✓
✗
Chain-of-thought reasoning
✗
✓
PhD-level science
✗
✓
Advanced math
✗
✓
Complex coding
✗
✓
128K context
✗
✓
Vision
✗
✓
File uploads
✗
✓
Safety evaluation
✗
✓
STEM optimization
✗
✓
Batch API
✗
✓
Benchmark-leading
✗
✓
Research tasks
✗
✓
Multi-step problem solving
✗
✓
Total Features
20
20
Quick Verdict
Independent analysis based on features, pricing, and user ratings
Choose DeepSeek V3 if you need:
- ✓ 128K context window
- ✓ Open weights
- ✓ Code generation
- ✓ Multi-language
- ✓ Math reasoning
Choose OpenAI o1 if you need:
- ✓ Chain-of-thought reasoning
- ✓ PhD-level science
- ✓ Advanced math
- ✓ Complex coding
- ✓ 128K context
Pricing Comparison
DeepSeek V3 is free; OpenAI o1 starts at $20/mo.
DeepSeek V3 Plans
Free tier available
Free (API)
Free- • Limited API calls
- • DeepSeek-V3 access
API Pay-as-you-go
Free- • $0.27/1M input tokens
- • Cheapest frontier model
OpenAI o1 Plans
Paid plans only
PlusBest Value
$20/month- • o1 access (limited)
- • o1-mini included
Pro
$200/month- • Unlimited o1
- • o1 pro mode
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