Which is cheaper, MiniMax M3.1 Flash and Nemotron 3 Ultra 550B A55B?

MiniMax M3.1 Flash has the lowest input price. Per 1M input tokens: MiniMax M3.1 Flash from $0.15 and Nemotron 3 Ultra 550B A55B from $0.50.

Which has the larger context window, MiniMax M3.1 Flash and Nemotron 3 Ultra 550B A55B?

MiniMax M3.1 Flash has the largest context window: MiniMax M3.1 Flash 1,000,000 tokens and Nemotron 3 Ultra 550B A55B 262,144 tokens.

Can I switch between MiniMax M3.1 Flash and Nemotron 3 Ultra 550B A55B 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-m3.1-flash, nvidia/nemotron-3-ultra-550b-a55b).

MiniMax M3.1 Flash vs Nemotron 3 Ultra 550B A55B

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 M3.1 Flash Minimaxminimax/minimax-m3.1-flash

Nemotron 3 Ultra 550B A55B NVIDIAnvidia/nemotron-3-ultra-550b-a55b

Creator

Minimax

NVIDIA

Released

Oct 19, 2026

May 16, 2026

Context window

262K

Max output

524K

16K

Input / 1MLowest provider price

$0.15

$0.50

Output / 1MLowest provider price

$0.60

$2.20

Providers

IntelligenceArtificial Analysis index

29.1

11.8

Accepts

Text, Image, Video

Text

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

MiniMax M3.1 Flash vs Nemotron 3 Ultra 550B A55B: summary

MiniMax M3.1 Flash and Nemotron 3 Ultra 550B A55B are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

MiniMax M3.1 Flash, from Minimax, has a 1,000,000-token context window, costs $0.15/1M input and $0.60/1M output tokens and scores 29.1 on the Artificial Analysis Intelligence Index.

Nemotron 3 Ultra 550B A55B, from NVIDIA, has a 262,144-token context window, costs $0.50/1M input and $2.20/1M output tokens and scores 11.8 on the Artificial Analysis Intelligence Index.

MiniMax M3.1 Flash is the cheapest on input, 3.3× cheaper than the next model, MiniMax M3.1 Flash has the largest context window and MiniMax M3.1 Flash 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-m3.1-flash", messages=[...]) # or client.chat.completions.create(model="nvidia/nemotron-3-ultra-550b-a55b", messages=[...])

Full API docs

Frequently asked questions

More comparisons

Benchmark scores sourced from ArtificialAnalysis