Which is cheaper, Gemini 4 Argon and Nemotron 3 Ultra 550B A55B?

Nemotron 3 Ultra 550B A55B has the lowest input price. Per 1M input tokens: Gemini 4 Argon from $2.00 and Nemotron 3 Ultra 550B A55B from $0.50.

Which has the larger context window, Gemini 4 Argon and Nemotron 3 Ultra 550B A55B?

Gemini 4 Argon has the largest context window: Gemini 4 Argon 1,048,576 tokens and Nemotron 3 Ultra 550B A55B 262,144 tokens.

Which is smarter, Gemini 4 Argon and Nemotron 3 Ultra 550B A55B?

Gemini 4 Argon scores highest on the Artificial Analysis Intelligence Index: Gemini 4 Argon 50.4 and Nemotron 3 Ultra 550B A55B 11.8.

Can I switch between Gemini 4 Argon 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 (google/gemini-4-argon, nvidia/nemotron-3-ultra-550b-a55b).

Gemini 4 Argon 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

Gemini 4 Argon Googlegoogle/gemini-4-argon

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

Creator

Google

NVIDIA

Released

Oct 13, 2026

May 16, 2026

Context window

1.05M

262K

Max output

66K

16K

Input / 1MLowest provider price

$2.00

$0.50

Output / 1MLowest provider price

$10.00

$2.20

Providers

IntelligenceArtificial Analysis index

50.4

11.8

Accepts

Text, Image, Audio, Video, Files

Text

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

Gemini 4 Argon vs Nemotron 3 Ultra 550B A55B: summary

Gemini 4 Argon 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.

Gemini 4 Argon, from Google, has a 1,048,576-token context window, costs from $2.00/1M input and $10.00/1M output tokens across 2 providers and scores 50.4 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.

Nemotron 3 Ultra 550B A55B is the cheapest on input, 4× cheaper than the next model, Gemini 4 Argon has the largest context window and Gemini 4 Argon 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="google/gemini-4-argon", messages=[...]) # or client.chat.completions.create(model="nvidia/nemotron-3-ultra-550b-a55b", messages=[...])

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Benchmark scores sourced from ArtificialAnalysis