MiniMax M3.1 Flash in practice: tests and comparisons with DeepSeek V4.1 Flash

A user asks MiniMax whether they picked the wrong model, saying usage on the supposedly unlimited M3.1 Flash burned through quickly — feedback on quota and throttling.

A user compares pricing: input/output match DeepSeek V4.1 Flash off-peak rates, but cache hits cost 5x more, with no peak pricing.

Only the two DeepSeek V4.1 Flash versions are Flash models among six rivals; MiniMax wins 2 of 6 against the newest one but tops Automation-Bench (62.2) and 256K long context (60.3).

Same 3D mech assembly and launch prompt: MiniMax M3.1 Flash used 71,038 output tokens in 10m17s versus Muse Wonder's 12,488 tokens in 1m33s, with a side-by-side comparison.

OpenRouter's popular anonymous model Space Bunny turns out to be MiniMax M3.1 Flash, free for 72 hours before pricing at $0.15 input and $0.60 output per million tokens.

On one shared pelican-on-a-bicycle prompt, MiniMax M3.1 Flash scored highest at 3.63 for $0.005, beating Kimi K3, DeepSeek V4.1 Flash and GLM-5.3 at roughly 1/80th of Kimi's cost.

M3.1 Flash hits 62.2% on Automation-bench versus Opus 5's 50.3% and 5.6 sol's 45.8%, is roughly tied on DeepSwe, and costs $0.15/$0.60 per million tokens against $5/$25, with open weights on Oct 23.

The author says he had already tested the anonymous Space Bunny in his peacock test, thinking it was a different model, and only now learned it was an early M3.1 Flash build.

The author says Space Bunny, i.e. MiniMax M3.1, is free to use in OpenCode and performs roughly on par with DeepSeek V4.1 Flash 1017.

A rundown of M3.1 Flash (formerly Space Bunny): $0.15/$0.60 per million tokens, Automation-Bench 62.2%, LOCA-Bench 256K 60.3%, with HLE 43.4% and Terminal Bench 38.1% flagged as weak spots.

A user recalls running the anonymous Space Bunny for 150 hours nonstop, saying it never slacked like GPT or compromised like Claude, and beats DeepSeek V4.1 Flash on some tasks.

A user says they moved to MiniMax after DeepSeek and shows Space Bunny, the anonymous M3.1 Flash, in action without specific task details or numbers.