MiniMax-M3.1-Flash vs GPT-5.6 Sol

API pricing, benchmark indices and specs — updated 23 October 2026.

MiniMaxAI · A · Open weights

Params

220.5 B

Context

—

30d

1 K

openai · B · API-only

Input / 1M

$4.00

Output / 1M

$20.00

AA index

proprietary · 1.0M context

Specification comparison

Differences are highlighted; identical values are muted.

Specification	MiniMax-M3.1-Flash	GPT-5.6 Sol
Deployment	Open weights · also via API	API-only (closed weights)
Parameters	220.5 B	n/a — API-only
Architecture	MiniMaxM3SparseForConditionalGeneration	n/a — API-only
Context length	1,048,576	1,050,000
Licence	other	Proprietary
Commercial use	Unknown	Per API terms
Languages	—	n/a — API-only
Downloads 30d	1,096	n/a — API-only
Downloads all time	1 K	n/a — API-only
Quantizations on the Hub	SAFETENSORS	n/a — API-only
Gated	No	n/a — API-only
First seen on the Hub	2026-10-17	n/a — API-only
API input price / 1M tokens	$0.15	$4.00
API output price / 1M tokens	$0.60	$20.00
Est. cost per 1M input + 1M output tokens	$0.75	$24.00
Cached input / 1M tokens	$0.015	$0.40
AA Intelligence Index	42.7	47
AA Coding Index	—	77.4
AA Agentic Index	—	50.2
Max output tokens	524,288	128,000
API providers	11	3
Tool calling	Yes	Yes
Reasoning mode	Yes	Yes

Estimated cost of 1M input + 1M output tokens via OpenRouter

MiniMax-M3.1-Flash $0.75

GPT-5.6 Sol $24.00

MiniMax-M3.1-Flash is 32.0× cheaper at list price.

On RTX 4090 · 24 GB · 8K context unless noted

MiniMax-M3.1-Flash · fp16 311.2 GB / 24 GB

❌ Won’t fit