// head_to_head
MiniMax M3.1 Flash vs Kimi K3.1 Pro
Published LiveBench scores across all seven categories, live list pricing, context windows, and the measured cost of a point of capability — for both models, side by side.
Kimi K3.1 Pro scores higher, MiniMax M3.1 Flash costs less — it depends on your workload.
Kimi K3.1 Pro is ahead by 4.4 points overall, and MiniMax M3.1 Flash lists 15× cheaper per blended million tokens. Whether 4.4 points is worth that depends on how much a wrong answer costs you. MiniMax M3.1 Flash also leads on measured cost per point of capability, at $0.0015 per point.
minimax
MiniMax M3.1 Flash
- Blended / 1M
- $0.262
- Context
- 1.0M
- Released
- Oct 19, 2026
- Overall score
- 66.9
moonshotai
Kimi K3.1 Pro
- Blended / 1M
- $4.00
- Context
- 1.0M
- Released
- Oct 23, 2026
- Overall score
- 71.3
Specs and pricing
| Metric | MiniMax M3.1 Flash | Kimi K3.1 Pro |
|---|---|---|
| LiveBench overall Weighted mean of the seven LiveBench category scores, 0–100. Higher is better. | 66.9 | 71.3win |
| Cost per point Measured benchmark spend divided by overall score — dollars per point of capability. | $0.0015win | $0.0104 |
| Blended price / 1M 3:1 input:output mix, the usual shape of production traffic. | $0.262win | $4.00 |
| Input price / 1M | $0.150win | $2.00 |
| Output price / 1M | $0.600win | $10.00 |
| Cached input / 1M Price of an input token served from the prompt cache, where the provider publishes one. | $0.015win | $0.200 |
| Context window | 1.0M | 1.0M |
| Max output tokens | 524K | 944Kwin |
Benchmarks by category
An overall score averages away the thing you probably care about. These are the seven LiveBench categories scored separately — MiniMax M3.1 Flash on top, Kimi K3.1 Pro below, both out of 100.
What each one costs to run
Per-token prices are hard to feel. These are monthly list costs for both models across five workload shapes, using each provider's published cached-input rate where there is one.
| Workload | MiniMax M3.1 Flash | Kimi K3.1 Pro |
|---|---|---|
| Support chatbot 1.2K in / 400 out × 200K requests | $74.28/mo | $1,150/mo |
| RAG assistant 8K in / 600 out × 100K requests | $102.00/mo | $1,480/mo |
| Coding agent 40K in / 4K out × 20K requests | $92.40/mo | $1,392/mo |
| Document extraction 20K in / 1.5K out × 50K requests | $188.25/mo | $2,660/mo |
| Bulk classification 500 in / 20 out × 5M requests | $367.50/mo | $5,100/mo |
Which should you pick?
You are running this at volume
MiniMax M3.1 Flash
Lowest measured cost per point of capability at $0.0015 per point — the gap compounds with every request.
Quality matters more than the bill
Kimi K3.1 Pro
Highest overall LiveBench score of the two at 71.3.
The workload is coding or agentic work
Kimi K3.1 Pro
Leads on long-horizon agentic — 39.1 against 28.8.
MiniMax M3.1 Flash vs Kimi K3.1 Pro FAQ
Which is better, MiniMax M3.1 Flash or Kimi K3.1 Pro?
Kimi K3.1 Pro scores higher, MiniMax M3.1 Flash costs less — it depends on your workload. Kimi K3.1 Pro is ahead by 4.4 points overall, and MiniMax M3.1 Flash lists 15× cheaper per blended million tokens. Whether 4.4 points is worth that depends on how much a wrong answer costs you. MiniMax M3.1 Flash also leads on measured cost per point of capability, at $0.0015 per point.
Is MiniMax M3.1 Flash cheaper than Kimi K3.1 Pro?
MiniMax M3.1 Flash is cheaper. On a 3:1 input:output blend, MiniMax M3.1 Flash lists at $0.262 per million tokens and Kimi K3.1 Pro at $4.00 — MiniMax M3.1 Flash is 15× cheaper. Input and output are priced separately — MiniMax M3.1 Flash charges $0.150 in and $0.600 out, Kimi K3.1 Pro charges $2.00 and $10.00 — so the model that looks cheaper flips depending on how output-heavy your workload is.
MiniMax M3.1 Flash vs Kimi K3.1 Pro: which scores higher on benchmarks?
MiniMax M3.1 Flash scores 66.9 and Kimi K3.1 Pro scores 71.3 overall on LiveBench, the weighted mean of its seven categories. That is a 4.4-point lead for Kimi K3.1 Pro. Category scores differ from the overall figure — a model can lead on reasoning and trail on coding, which the per-category table above breaks out.
Which gives better value for money, MiniMax M3.1 Flash or Kimi K3.1 Pro?
MiniMax M3.1 Flash. Cost per point divides the measured dollars LiveBench spent running the benchmark by the score it earned, so it captures something token pricing misses: a reasoning model can emit many times more tokens than its per-token rate suggests. MiniMax M3.1 Flash works out at $0.0015 per point and Kimi K3.1 Pro at $0.0104.
Does MiniMax M3.1 Flash or Kimi K3.1 Pro have a bigger context window?
They are effectively the same — 1.0M for MiniMax M3.1 Flash and 1.0M for Kimi K3.1 Pro.
Do MiniMax M3.1 Flash and Kimi K3.1 Pro support prompt caching?
Both publish a cached-input rate: $0.015 per million for MiniMax M3.1 Flash and $0.200 for Kimi K3.1 Pro, against full input rates of $0.150 and $2.00. On a workload with a long stable prefix — a system prompt, a tool schema, a retrieved corpus — that changes the economics more than the headline price does.
Related comparisons
How these numbers are produced
- Price — provider list price from OpenRouter, refreshed every 15 minutes. “Blended” is a 3:1 input:output mix.
- Scores — LiveBench release 2026-10-25, using their own category map. Each model shows its strongest published run. A blank means “not evaluated”, never “bad”.
- Cost per point — the measured dollars LiveBench spent on the run, divided by the score it earned.
- “Win” — awarded only past a threshold: one full point on a benchmark score, 10% on a price, 25% on a context window. Anything tighter reports as a tie, because effort settings alone move a LiveBench score by more than that.
Published benchmarks rank models on someone else's tasks. Before committing, see LLM & agent evaluation for building an eval on your own.