Which is cheaper, Nemotron 3 Ultra 550B A55B and Qwen3.8 27B?

Qwen3.8 27B has the lowest input price. Per 1M input tokens: Nemotron 3 Ultra 550B A55B from $0.50 and Qwen3.8 27B from $0.15.

Which is smarter, Nemotron 3 Ultra 550B A55B and Qwen3.8 27B?

Qwen3.8 27B scores highest on the Artificial Analysis Intelligence Index: Nemotron 3 Ultra 550B A55B 11.8 and Qwen3.8 27B 20.1.

Can I switch between Nemotron 3 Ultra 550B A55B and Qwen3.8 27B 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 (nvidia/nemotron-3-ultra-550b-a55b, qwen/qwen3.8-27b).

Nemotron 3 Ultra 550B A55B vs Qwen3.8 27B

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

Estimate monthly cost for these models

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

Qwen3.8 27B Alibabaqwen/qwen3.8-27b

Creator

NVIDIA

Alibaba

Released

May 16, 2026

Aug 14, 2025

Context window

262K

Max output

16K

131K

Input / 1MLowest provider price

$0.50

$0.15$0.15–$0.40 across 2

Output / 1MLowest provider price

$2.20

$1.88$1.88–$3.00 across 2

Providers

IntelligenceArtificial Analysis index

11.8

20.1

Accepts

Text

Text, Image, Video

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

Nemotron 3 Ultra 550B A55B vs Qwen3.8 27B: summary

Nemotron 3 Ultra 550B A55B and Qwen3.8 27B are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

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.

Qwen3.8 27B, from Alibaba, has a 262,144-token context window, costs from $0.15/1M input and $1.88/1M output tokens across 2 providers and scores 20.1 on the Artificial Analysis Intelligence Index.

Qwen3.8 27B is the cheapest on input, 3.3× cheaper than the next model and Qwen3.8 27B 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="nvidia/nemotron-3-ultra-550b-a55b", messages=[...]) # or client.chat.completions.create(model="qwen/qwen3.8-27b", messages=[...])

Full API docs

Frequently asked questions

More comparisons

Benchmark scores sourced from ArtificialAnalysis