Compare · ModelsLive · 2 picked · head to head
o3 Mini vs gpt-oss-120b (free)
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
o3 Mini wins on 1/1 benchmarks
o3 Mini wins 1 of 1 shared benchmarks. Leads in coding.
Category leads
coding·o3 Mini
Hype vs Reality
Attention vs performance
o3 Mini
#149 by perf·no signal
gpt-oss-120b (free)
#20 by perf·no signal
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
1 benchmark · 2 models
o3 Minigpt-oss-120b (free)
Aider polyglot
o3 Mini leads by +18.6
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
o3 Mini
60.4
gpt-oss-120b (free)
41.8
Full benchmark table
| Benchmark | o3 Mini | gpt-oss-120b (free) |
|---|---|---|
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 60.4 | 41.8 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| o3 Mini | $1.10 | $4.40 | 200K tokens (~100 books) | $19.25 |
| gpt-oss-120b (free) | $0.00 | $0.00 | 131K tokens (~66 books) | — |