Is MiniMax M3.1 Flash always cheaper than MiniMax M3?

Yes, on a per-token basis MiniMax M3.1 Flash is priced at exactly half of MiniMax M3's standard rate for both input ($0.15 vs $0.30) and output ($0.60 vs $1.20) tokens, with no long-context surcharge, so it's cheaper at any realistic volume.

Does MiniMax M3 get more expensive with longer prompts?

Yes. MiniMax M3's pricing doubles once input exceeds roughly 512K tokens, moving from $0.30/$1.20 per million to $0.60/$2.40 per million. MiniMax M3.1 Flash avoids this entirely with one flat rate across its full 1M-token context window.

Which model is better for output-heavy workloads like coding agents?

MiniMax M3.1 Flash, since output tokens are typically the dominant cost driver in agentic and coding tasks, and its $0.60 per million output rate is half of M3's $1.20, directly cutting the largest line item in a typical bill.

Are both MiniMax M3.1 Flash and MiniMax M3 still available right now?

Yes, both are live and actively offered via MiniMax's API as of late October 2026, with M3.1 Flash positioned as the newer, lower-cost successor model aimed at agent and coding workloads.

HEAD-TO-HEAD · BUDGET-TIER · VERIFIED OCTOBER 23, 2026

MiniMax M3.1 Flash vs MiniMax M3 — which one is actually cheaper?

MiniMax M3.1 Flash and MiniMax M3 come from the same family, but Flash is priced at exactly half of M3's standard rate on both input and output tokens, making it the clear budget pick for high-volume agentic and coding workloads.

Spec	MiniMax M3.1 Flash	MiniMax M3
Input / 1M tokens	$0.15	$0.30
Output / 1M tokens	$0.60	$1.20
Context window	1M	512K (1M at 2x rate)

The output price gap

The output-token gap is where this comparison really bites, since most agentic and coding workloads are output-heavy. MiniMax M3.1 Flash charges $0.60 per million output tokens, while MiniMax M3 charges $1.20 per million — exactly double. Over large runs with long reasoning traces or generated code, that 2x multiplier on output compounds fast, and it's the single biggest lever separating the two models' total bills.

Context window

MiniMax M3.1 Flash ships with a flat 1M-token context window and a flat price regardless of prompt length. MiniMax M3 also advertises up to roughly 512K–1M tokens of context, but its pricing structure doubles once input exceeds 512K tokens, so long-context M3 usage effectively costs $0.60/$2.40 per million rather than the base $0.30/$1.20 rate. Treat the M3 long-context figures as an estimate since tiering details can shift.

Worked example

At 100M input tokens and 30M output tokens in a month: MiniMax M3.1 Flash costs (100 x $0.15) + (30 x $0.60) = $15.00 + $18.00 = $33.00. MiniMax M3, assuming the standard sub-512K tier, costs (100 x $0.30) + (30 x $1.20) = $30.00 + $36.00 = $66.00. That makes M3.1 Flash exactly half the monthly cost of M3 at this volume — a $33.00 savings.

Prices from the LLM Price Watch daily tracker, 2026-10-23. Prices change; use the calculator with your own usage for an exact comparison, or see the full price table for every tracked model.