Compare · ModelsLive · 2 picked · head to head
GPT-4.1 vs gpt-oss-20b
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-4.1 wins on 4/5 benchmarks
GPT-4.1 wins 4 of 5 shared benchmarks. Leads in knowledge · language · reasoning.
Category leads
knowledge·GPT-4.1language·GPT-4.1math·gpt-oss-20breasoning·GPT-4.1
Hype vs Reality
Attention vs performance
GPT-4.1
#121 by perf·no signal
gpt-oss-20b
#22 by perf·no signal
Best value
gpt-oss-20b
91.6x better value than GPT-4.1
GPT-4.1
8.7 pts/$
$5.00/M
gpt-oss-20b
792.9 pts/$
$0.09/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
5 benchmarks · 2 models
GPT-4.1gpt-oss-20b
HELM · GPQA
GPT-4.1 leads by +6.5
GPT-4.1
65.9
gpt-oss-20b
59.4
HELM · IFEval
GPT-4.1 leads by +10.6
GPT-4.1
83.8
gpt-oss-20b
73.2
HELM · MMLU-Pro
GPT-4.1 leads by +7.1
GPT-4.1
81.1
gpt-oss-20b
74.0
HELM · Omni-MATH
gpt-oss-20b leads by +9.4
GPT-4.1
47.1
gpt-oss-20b
56.5
HELM · WildBench
GPT-4.1 leads by +11.7
GPT-4.1
85.4
gpt-oss-20b
73.7
Full benchmark table
| Benchmark | GPT-4.1 | gpt-oss-20b |
|---|---|---|
HELM · GPQA | 65.9 | 59.4 |
HELM · IFEval | 83.8 | 73.2 |
HELM · MMLU-Pro | 81.1 | 74.0 |
HELM · Omni-MATH | 47.1 | 56.5 |
HELM · WildBench | 85.4 | 73.7 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| GPT-4.1 | $2.00 | $8.00 | 1.0M tokens (~524 books) | $35.00 |
| gpt-oss-20b | $0.03 | $0.14 | 131K tokens (~66 books) | $0.57 |