GPT Audio alternatives
Match · Updated July 2026
The closest alternative to GPT Audio is GPT-5.6 Luna Pro — comparable intelligence (— vs —); for a cheaper option, GPT-5.6 Terra runs $1.25/M vs $2.50/M; and the best open-weight substitute is Kimi K3.
Closest match
Cheaper alternatives
gpt-5.6-terra
$1.25/M input · 55.0 intel
grok-4.5
$2.00/M input · 53.8 intel
claude-sonnet-5
$2.00/M input · 53.4 intel
claude-sonnet-5:batch
$1.00/M input · 53.4 intel
gpt-5.4:batch
$1.25/M input · 51.4 intel
gpt-5.6-luna
$0.500/M input · 51.2 intel
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 Audio?
GPT-5.6 Luna Pro is the closest alternative to GPT Audio, with an Intelligence Index of — (GPT Audio scores —) at $0.500 per million input tokens.
Is there a cheaper alternative to GPT Audio?
Yes — GPT-5.6 Terra costs $1.25 per million input tokens versus $2.50 for GPT Audio, while staying within ~8 points of its Intelligence Index.
Is there an open-source alternative to GPT Audio?
Kimi K3 is the strongest open-weight alternative to GPT Audio — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.