Updated April 2026 · Independent Analysis
OpenAI o1vsPhi-3
OpenAI o1 starts at $20/mo; Phi-3 is free. OpenAI o1 is rated higher at 4.6/5 vs Phi-3's 4/5.
OpenAI o1vs Phi-3
★ 4.6/5+0.6 vs Phi-3
Only in OpenAI o1
- ✦ Chain-of-thought reasoning
- ✦ PhD-level science
- ✦ Advanced math
From $20/mo10M+ users · est. 2024
Try OpenAI o1 Free →
Phi-3vs OpenAI o1
★ 4.0/5-0.6 vs OpenAI o1
Only in Phi-3
- ✦ Edge deployment
- ✦ On-device inference
- ✦ Open-source (MIT)
✓ Free plan500K+ users · est. 2024
Try Phi-3 Free →Ratings Breakdown
OpenAI o1
4.6/5 avg
G2 Score4.6/5
Capterra Score4.5/5
G2 Rating4.6/5
Phi-3
4.0/5 avg
G2 Score4/5
Capterra Score4/5
G2 Rating4/5
Quick Stats
Feature Comparison
OpenAI o1 uniquely offers Chain-of-thought reasoning, PhD-level science, Advanced math. Phi-3 uniquely offers Edge deployment, On-device inference, Open-source (MIT). Both share 4 features including 128K context, Function calling, JSON mode.
Feature
OpenAI o1
Phi-3
128K context
✓
✓
Function calling
✓
✓
JSON mode
✓
✓
System prompts
✓
✓
Chain-of-thought reasoning
✓
✗
PhD-level science
✓
✗
Advanced math
✓
✗
Complex coding
✓
✗
Vision
✓
✗
API access
✓
✗
Streaming
✓
✗
File uploads
✓
✗
Safety evaluation
✓
✗
STEM optimization
✓
✗
Batch API
✓
✗
Tool use
✓
✗
Document analysis
✓
✗
Benchmark-leading
✓
✗
Research tasks
✓
✗
Multi-step problem solving
✓
✗
Edge deployment
✗
✓
On-device inference
✗
✓
Open-source (MIT)
✗
✓
Code generation
✗
✓
Multi-language
✗
✓
Fine-tuning
✗
✓
Quantization
✗
✓
GGUF support
✗
✓
Azure integration
✗
✓
Local deployment
✗
✓
Low memory footprint
✗
✓
Fast inference
✗
✓
ONNX support
✗
✓
HuggingFace integration
✗
✓
Commercial use
✗
✓
No GPU required for small variants
✗
✓
Total Features
20
20
Quick Verdict
Independent analysis based on features, pricing, and user ratings
Choose OpenAI o1 if you need:
- ✓ Chain-of-thought reasoning
- ✓ PhD-level science
- ✓ Advanced math
- ✓ Complex coding
- ✓ Vision
Choose Phi-3 if you need:
- ✓ Edge deployment
- ✓ On-device inference
- ✓ Open-source (MIT)
- ✓ Code generation
- ✓ Multi-language
Pricing Comparison
OpenAI o1 starts at $20/mo; Phi-3 is free.
OpenAI o1 Plans
Paid plans only
PlusBest Value
$20/month- • o1 access (limited)
- • o1-mini included
Pro
$200/month- • Unlimited o1
- • o1 pro mode
Phi-3 Plans
Free tier available
Free (open-source)
Free- • Download & run locally
- • MIT License
Azure AI
Free- • Pay-per-token
- • Managed hosting
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