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GPT-4.1 nano vs Grok 4

Compare OpenAI and xAI AI models

OpenAI
GPT-4.1 nano
vs
xAI
Grok 4

Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

GPT-4.1 nano

Per Request:$0.000300
Daily:$0.03
Monthly:$0.90
Yearly:$10.95

Grok 4

Per Request:$0.0105
Daily:$1.05
Monthly:$31.50
Yearly:$383.25

Cost Differences

+$0.0102
Per Request
+$1.02
Daily
+$30.60
Monthly
+$372.30
Yearly

Grok 4 costs more than GPT-4.1 nano

Feature Comparison

FeatureGPT-4.1 nanoGrok 4
ProviderOpenAIxAI
Input Price$0.10/1M tokens$3.00/1M tokens
Output Price$0.40/1M tokens$15.00/1M tokens
Context Window128,000 tokens256,000 tokens
Max Output8,192 tokens131,072 tokens
Categoryefficientreasoning
Capabilities
text
textvisionreasoningcode
Release Date4/14/20257/9/2025

GPT-4.1 nano vs Grok 4: Which Should You Choose?

Choosing between GPT-4.1 nano and Grok 4 depends on your priorities: cost efficiency, context length, or raw capability. GPT-4.1 nano is the more affordable option at $0.10/1M input tokens97% cheaper than Grok 4. Meanwhile, Grok 4 offers a significantly larger context window at 256,000 tokens vs 128,000 for GPT-4.1 nano.

These models come from different providers — OpenAI and xAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with OpenAI, switching to xAIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.

These models target different tiers: GPT-4.1 nano is a efficient model while Grok 4 is reasoning. This means they're optimized for different workloads. Grok 4 targets more demanding workloads, while GPT-4.1 nano provides a cost-effective option for everyday tasks.

Output costs matter too. GPT-4.1 nano charges $0.40/1M output tokens vs $15.00 for Grok 4. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. GPT-4.1 nano has the edge here at $0.40/1M output tokens.

Multimodal capabilities: Grok 4 supports vision (image inputs) while GPT-4.1 nano is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose GPT-4.1 nano when:

  • • Budget is a primary concern
  • • You're already using OpenAI's API ecosystem
  • • You're running high-volume, latency-sensitive workloads

Choose Grok 4 when:

  • • You need a larger context window (256,000 tokens)
  • • You need more capabilities (vision, reasoning, code)
  • • You need longer outputs (up to 131,072 tokens)
  • • You're already using xAI's API ecosystem

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

GPT-4.1 nano (OpenAI)

Grok 4 (xAI)

Start using GPT-4.1 nano today

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Start using Grok 4 today

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Frequently Asked Questions

Which is cheaper, GPT-4.1 nano or Grok 4?
GPT-4.1 nano is cheaper for input tokens at $0.10 per million tokens vs $3.00 for Grok 4 — that's 97% savings on input costs.
What is the context window difference between GPT-4.1 nano and Grok 4?
GPT-4.1 nano supports 128,000 tokens while Grok 4 supports 256,000 tokens — a difference of 128,000 tokens in favor of Grok 4.
Which model is better for AI Chatbot?
Both models support text. For ai chatbot, GPT-4.1 nano is the lower-cost option, while Grok 4 offers a larger context window (256,000 vs 128,000 tokens). Choose GPT-4.1 nano for budget sensitivity or Grok 4 for longer context tasks.
Which model has better overall pricing for heavy usage?
At 100 requests/day with 1,000 input and 500 output tokens each, GPT-4.1 nano costs about $0.90/month and Grok 4 costs about $31.50/month. Overall, GPT-4.1 nano has lower combined input + output rates ($0.10 in, $0.40 out) vs Grok 4.

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