gpt-oss-20b alternatives
Match · Updated July 2026
The closest alternative to gpt-oss-20b is Nemotron 3 Nano Omni (free) — comparable intelligence (14.9 vs 14.9); for a cheaper option, GPT-5 Nano (batch) runs $0.025/M vs $0.030/M; and the best open-weight substitute is Kimi K3.
Closest match
Cheaper alternatives
gpt-5-nano:batch
$0.025/M input · 19.9 intel
north-mini-code:free
Free/M input · 19.8 intel
nemotron-3-nano-omni-30b-a3b-reasoning:free
Free/M input · 14.9 intel
gpt-oss-20b:free
Free/M input · 14.9 intel
ling-2.6-flash
$0.010/M input · 14.1 intel
Smarter alternatives
Open-source alternatives
kimi-k3
57.1 intel · open weights · 1.0M ctx
glm-5.2
51.1 intel · open weights · 1.0M ctx
minimax-m3
44.4 intel · open weights · 1.0M ctx
minimax-m3:batch
44.4 intel · open weights · 524K ctx
deepseek-v4-pro
44.3 intel · open weights · 1.0M ctx
kimi-k2.6
44.2 intel · open weights · 262K ctx
Frequently asked
What is the best alternative to gpt-oss-20b?
Nemotron 3 Nano Omni (free) is the closest alternative to gpt-oss-20b, with an Intelligence Index of 14.9 (gpt-oss-20b scores 14.9) at Free per million input tokens.
Is there a cheaper alternative to gpt-oss-20b?
Yes — GPT-5 Nano (batch) costs $0.025 per million input tokens versus $0.030 for gpt-oss-20b, while staying within ~8 points of its Intelligence Index.
Is there an open-source alternative to gpt-oss-20b?
Kimi K3 is the strongest open-weight alternative to gpt-oss-20b — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.