Compare · ModelsLive · 2 picked · head to head
GPT-5 Mini vs gpt-oss-20b (free)
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
gpt-oss-20b (free) wins on 0/0 benchmarks
Not enough overlapping benchmarks to declare a winner yet · GPT-5 Mini · gpt-oss-20b (free) are still filling in scores.
Hype vs Reality
Attention vs performance
GPT-5 Mini
#63 by perf·no signal
gpt-oss-20b (free)
#25 by perf·no signal
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| GPT-5 Mini | $0.25 | $2.00 | 400K tokens (~200 books) | $6.88 |
| gpt-oss-20b (free) | $0.00 | $0.00 | 131K tokens (~66 books) | — |