Which is cheaper, MiniMax M3 and Kimi K3.1 Pro?

MiniMax M3 has the lowest input price. Per 1M input tokens: MiniMax M3 from $0.30 and Kimi K3.1 Pro from $2.00.

Which has the larger context window, MiniMax M3 and Kimi K3.1 Pro?

Kimi K3.1 Pro has the largest context window: MiniMax M3 1,000,000 tokens and Kimi K3.1 Pro 1,048,576 tokens.

Can I switch between MiniMax M3 and Kimi K3.1 Pro without changing my code?

Yes. All of them are served through FastRouter's OpenAI-compatible API, so switching is a change of the model parameter (minimax/minimax-m3, moonshotai/kimi-k3.1-pro).

MiniMax M3 vs Kimi K3.1 Pro

Side-by-side pricing per provider, context window, benchmark scores and speed, all on one OpenAI-compatible API.

Estimate monthly cost for these models

MiniMax M3 Minimaxminimax/minimax-m3

Kimi K3.1 Pro MoonshotAImoonshotai/kimi-k3.1-pro

Creator

Minimax

MoonshotAI

Released

May 31, 2026

Oct 23, 2026

Context window

1.05M

Max output

512K

1.05M

Input / 1MLowest provider price

$0.30

$2.00

Output / 1MLowest provider price

$1.20

$10.00

Providers

IntelligenceArtificial Analysis index

18.7

46.0

LatencyMedian time to first token

3.1s

—

ThroughputMedian tokens per second

<1 t/s

—

Accepts

Text, Image, Video

Text, Image

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

MiniMax M3 vs Kimi K3.1 Pro: summary

MiniMax M3 and Kimi K3.1 Pro are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

MiniMax M3, from Minimax, has a 1,000,000-token context window, costs $0.30/1M input and $1.20/1M output tokens and scores 18.7 on the Artificial Analysis Intelligence Index.

Kimi K3.1 Pro, from MoonshotAI, has a 1,048,576-token context window, costs $2.00/1M input and $10.00/1M output tokens and scores 46.0 on the Artificial Analysis Intelligence Index.

MiniMax M3 is the cheapest on input, 6.7× cheaper than the next model, Kimi K3.1 Pro has the largest context window and Kimi K3.1 Pro scores highest for intelligence.

Switch with one line

client = OpenAI(base_url="https://api.fastrouter.ai/api/v1", api_key="<FASTROUTER_API_KEY>") client.chat.completions.create(model="minimax/minimax-m3", messages=[...]) # or client.chat.completions.create(model="moonshotai/kimi-k3.1-pro", messages=[...])

Full API docs

Frequently asked questions

More comparisons

Benchmark scores sourced from ArtificialAnalysis