Model Comparison

Comprehensive side-by-side analysis of model capabilities and performance

OpenAI

GPT-5 nano

OpenAI

GPT-5 nano is a multimodal language model developed by OpenAI. The model shows competitive results across 5 benchmarks. It excels particularly in AIME 2025 (85.2%), HMMT 2025 (75.6%), GPQA (71.2%). It supports a 528K token context window for handling large documents. The model is available through 2 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents OpenAI's latest advancement in AI technology.

OpenAI

o3

OpenAI

o3 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 65.3% across 19 benchmarks. It excels particularly in AIME 2024 (91.6%), ARC-AGI (88.0%), MathVista (86.8%). The model shows particular specialization in vision tasks with an average performance of 76.7%. It supports a 300K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents OpenAI's latest advancement in AI technology.

OpenAI

o3

OpenAI

2025-04-16

OpenAI

GPT-5 nano

OpenAI

2025-08-07

3 months newer

Pricing Comparison

Cost per million tokens (USD)

OpenAI

GPT-5 nano

$9.55 cheaper
Input:$0.05
Output:$0.40
OpenAI

o3

Input:$2.00
Output:$8.00

Performance Metrics

Context window and performance specifications

OpenAI

GPT-5 nano

Larger context
Max Context:528.0K
OpenAI

o3

Max Context:300.0K

Average performance across 4 common benchmarks

OpenAI

GPT-5 nano

Average Score:43.7%
OpenAI

o3

+7.8%
Average Score:51.4%

Performance comparison across key benchmark categories

OpenAI

GPT-5 nano

general
60.2%
math
9.6%
OpenAI

o3

general
+7.3%
67.5%
math
+41.7%
51.3%
Benchmark Scores - Detailed View
Side-by-side comparison of all benchmark scores
Knowledge Cutoff
Training data recency comparison

GPT-5 nano

2024-05-30

o3

2024-05-31

More recent knowledge cutoff means awareness of newer technologies and frameworks

Provider Availability & Performance

Available providers and their performance metrics

OpenAI

GPT-5 nano

2 providers

ZeroEval

Throughput: 500 tok/s
Latency: 0.3ms

OpenAI

Throughput: 500 tok/s
Latency: 0.3ms
OpenAI

o3

1 providers

OpenAI

Throughput: 50 tok/s
Latency: 20ms
OpenAI

GPT-5 nano

Avg Score:43.7%
Providers:2
OpenAI

o3

+7.8%
Avg Score:51.4%
Providers:1