API cost decision in 10 seconds

🔥Nemotron 3 Super (free) vs 🔥Grok 4.1 Fast

Pick Nemotron 3 Super (free) for lower cost; pick Grok 4.1 Fast only if the larger context window matters more.

Pricing data updated: 2026-05-13T16:32:23Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Nemotron 3 Super (free) for lower cost; pick Grok 4.1 Fast only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Nemotron 3 Super (free) is estimated at $0 vs $0.45 for Grok 4.1 Fast, saving $0.45 (100% lower).

Cost-first pickNemotron 3 Super (free)

Context-first pickGrok 4.1 Fast

Sample savings$0.45100%

10x traffic gap$4.5

Grok 4.1 Fast has more context, but Nemotron 3 Super (free) saves $0.45 on the standard workload. At 10x that traffic, the same price gap is about $4.5. Use the calculator below to replace the sample workload with your own token volume.

Cheaper input Nemotron 3 Super (free) $0 vs $0.2 / 1M

Nemotron 3 Super (free) is free for input tokens while Grok 4.1 Fast costs $0.2 per 1M tokens.

Cheaper output Nemotron 3 Super (free) $0 vs $0.5 / 1M

Nemotron 3 Super (free) is free for output tokens while Grok 4.1 Fast costs $0.5 per 1M tokens.

Larger context Grok 4.1 Fast 262.14K vs 2M

Grok 4.1 Fast has 1.74M more context (7.63x larger).

Sample workload Nemotron 3 Super (free) $0 vs $0.45

Nemotron 3 Super (free) is free for the standard workload while the other model is estimated at $0.45.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Nemotron 3 Super (free) Calculating… Estimated API cost

Grok 4.1 Fast Calculating… Estimated API cost

Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

Nemotron 3 Super (free) has the lower input price; Nemotron 3 Super (free) has the lower output price; Grok 4.1 Fast offers the larger context window. For the 1M input plus 500K output sample, Nemotron 3 Super (free) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0 for Nemotron 3 Super (free) and $0.45 for Grok 4.1 Fast.

Best Fit

Choose Nemotron 3 Super (free) when you care most about lower input-token price, and lower output-token price.

Choose Grok 4.1 Fast when you care most about larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Nemotron 3 Super (free) is estimated at $0 vs $0.45 for Grok 4.1 Fast, saving $0.45 (100% lower).
Nemotron 3 Super (free) is free for the standard workload while the other model is estimated at $0.45.
Nemotron 3 Super (free) is free for input tokens while Grok 4.1 Fast costs $0.2 per 1M tokens.
Nemotron 3 Super (free) is free for output tokens while Grok 4.1 Fast costs $0.5 per 1M tokens.
Grok 4.1 Fast has 1.74M more context (7.63x larger).

Head-to-Head Specs

Feature	🔥Nemotron 3 Super (free) (NVIDIA)	🔥Grok 4.1 Fast (xAI)
Input Price prompt tokens per 1M	$0	$0.2
Completion Price per 1M tokens	$0	$0.5
Sample Workload Cost 1M input + 500K output	$0	$0.45
Context Window	262.14K	2M
Release Date	2026-03-11	2025-11-19
Popularity Rank current rank	#12	#18

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Nemotron 3 Super (free)	On the standard 1M input plus 500K output workload, Nemotron 3 Super (free) is estimated at $0 vs $0.45 for Grok 4.1 Fast, saving $0.45 (100% lower).
High-volume input processing	Nemotron 3 Super (free)	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Nemotron 3 Super (free)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Grok 4.1 Fast	A larger context window leaves more room for retrieved passages, conversation history, or source files.

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Provider catalogs

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NVIDIA catalog

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xAI catalog

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Grok 4.1 Fast

Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...