Laguna S 2.1 alternatives
Quick answer · Updated July 2026
The closest alternative to Laguna S 2.1 is Laguna S 2.1 (free) — comparable intelligence (— vs —); for a cheaper option, DeepSeek V4 Flash runs $0.094/M vs $0.100/M; for more speed, GPT-5.6 Luna hits 174 t/s; and the best open-weight substitute is GLM 5.2.
Closest match
Cheaper alternatives
deepseek-v4-flash
$0.094/M input · 40.3 intel
hy3-preview
$0.063/M input · 33.6 intel
ring-2.6-1t
$0.075/M input · 30.6 intel
ling-2.6-1t
$0.075/M input · 26.1 intel
gpt-oss-120b
$0.037/M input · 23.8 intel
glm-4.7-flash
$0.060/M input · 22.9 intel
Faster alternatives
gpt-5.6-luna
174 t/s · 2.1s ttft
gemini-2.5-flash-lite
139 t/s · 384ms ttft
gemini-3.1-flash-lite
130 t/s · 1.4s ttft
gpt-5.4-mini
130 t/s · 2.3s ttft
gemini-3.6-flash
126 t/s · 1.8s ttft
gemini-3.5-flash
119 t/s · 1.7s ttft
Open-source alternatives
glm-5.2
51.1 intel · open weights · 1.0M ctx
minimax-m3
44.4 intel · open weights · 1.0M ctx
deepseek-v4-pro
44.3 intel · open weights · 1.0M ctx
kimi-k2.6
44.2 intel · open weights · 262K ctx
mimo-v2.5-pro
42.2 intel · open weights · 1.1M ctx
kimi-k2.7-code
41.9 intel · open weights · 262K ctx
Frequently asked
What is the best alternative to Laguna S 2.1?
Laguna S 2.1 (free) is the closest alternative to Laguna S 2.1, with an Intelligence Index of — (Laguna S 2.1 scores —) at Free per million input tokens.
Is there a cheaper alternative to Laguna S 2.1?
Yes — DeepSeek V4 Flash costs $0.094 per million input tokens versus $0.100 for Laguna S 2.1, while staying within ~8 points of its Intelligence Index.
Is there an open-source alternative to Laguna S 2.1?
GLM 5.2 is the strongest open-weight alternative to Laguna S 2.1 — downloadable from Hugging Face and self-hostable, scoring 51.1 on intelligence.