Compare · ModelsLive · 2 picked · head to head
GPT-5 Chat vs o3 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5 Chat wins on 1/1 benchmarks
GPT-5 Chat wins 1 of 1 shared benchmarks. Leads in coding.
Category leads
coding·GPT-5 Chat
Hype vs Reality
Attention vs performance
GPT-5 Chat
#1 by perf·#1 by attention
o3 Pro
#33 by perf·no signal
Best value
GPT-5 Chat
11.9x better value than o3 Pro
GPT-5 Chat
14.6 pts/$
$5.63/M
o3 Pro
1.2 pts/$
$50.00/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
1 benchmark · 2 models
GPT-5 Chato3 Pro
Aider polyglot
GPT-5 Chat leads by +3.1
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
GPT-5 Chat
88.0
o3 Pro
84.9
Full benchmark table
| Benchmark | GPT-5 Chat | o3 Pro |
|---|---|---|
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 88.0 | 84.9 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| GPT-5 Chat | $1.25 | $10.00 | 128K tokens (~64 books) | $34.38 |
| o3 Pro | $20.00 | $80.00 | 200K tokens (~100 books) | $350.00 |