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Model comparison - Similar price, same tier

GPT-5.4 Mini vs Grok Build 0.1

GPT-5.4 Mini is from OpenAI and Grok Build 0.1 is from xAI. On list price, GPT-5.4 Mini charges 25% less than Grok Build 0.1 for input ($0.75 vs $1 per 1M tokens), and GPT-5.4 Mini charges 2.3x Grok Build 0.1's output price ($4.50 vs $2 per 1M tokens). GPT-5.4 Mini has a 400,000-token context window and Grok Build 0.1 256,000 tokens; GPT-5.4 Mini returns up to 128,000 output tokens per response, and no primary source states a max output for Grok Build 0.1. GPT-5.4 Mini was released on March 17, 2026 and Grok Build 0.1 on May 19, 2026. Both are closed-weights models, available only through an API.

Last verified from each provider's pricing page. All sources

OpenAI - Closed

GPT-5.4 Mini
Input / 1M
$0.75
Output / 1M
$4.50
Context
400K

xAI - Closed

Grok Build 0.1
Input / 1M
$1
Output / 1M
$2
Context
256K

Side-by-side specs

SpecGPT-5.4 MiniGrok Build 0.1
ProviderOpenAIxAI
Input / 1M tokens$0.75$1
Output / 1M tokens$4.50$2
Cache read / 1M$0.075$0.20
Batch input / 1M$0.375-
Batch output / 1M$2.25-
Long-context rates above-200,000 tokens
Context window400,000256,000
Max output128,000-
Release date
WeightsClosedClosed
API model idgpt-5.4-minigrok-build-0.1
AI Gateway idopenai/gpt-5.4-minispacexai/grok-build-0.1
Last verified

Prices in USD per 1M tokens at each provider's standard first-party rate. A dash means the provider does not bill that item separately or no primary page states it.

What each costs in practice

The same three workloads every model page uses, worked from each model's standard list rates. Swap in your own token counts with the math on each model's page.

WorkloadGPT-5.4 MiniGrok Build 0.1
One agent session1M input tokens and 100K output tokens, no caching.$1.20$1.20
A chat app10,000 requests a day at 2K input and 500 output tokens each.$37.50$1,125.00 per 30-day month$30.00$900.00 per 30-day month
The same session at a 90% cache hit90% of the input is read from the prompt cache. The one-time cache write premium is not included.$0.5925$0.48
Show the math

GPT-5.4 Mini

  • One agent sessionInput: 1M x $0.75 = $0.75Output: 0.1M x $4.50 = $0.45
  • A chat appInput: 20M x $0.75 = $15.00Output: 5M x $4.50 = $22.50
  • The same session at a 90% cache hitCached input: 0.9M x $0.075 = $0.0675Uncached input: 0.1M x $0.75 = $0.075Output: 0.1M x $4.50 = $0.45

Grok Build 0.1

  • One agent sessionInput: 1M x $1 = $1.00Output: 0.1M x $2 = $0.20
  • A chat appInput: 20M x $1 = $20.00Output: 5M x $2 = $10.00
  • The same session at a 90% cache hitCached input: 0.9M x $0.20 = $0.18Uncached input: 0.1M x $1 = $0.10Output: 0.1M x $2 = $0.20

Benchmarks under the same setting

No board in the benchmark directory lists both GPT-5.4 Mini and Grok Build 0.1 under the same setting, so there is no like-for-like score to show here.

Set them up in your tools

Step-by-step guides whose official docs list GPT-5.4 Mini or Grok Build 0.1 by model id.

Model pages

OpenAIGPT-5.4 Mini pricing and specsFull rate card, worked cost examples and sources. Closed weights.xAIGrok Build 0.1 pricing and specsFull rate card, worked cost examples and sources. Closed weights.

FAQ

How do GPT-5.4 Mini and Grok Build 0.1 compare on price?

On list price, GPT-5.4 Mini charges 25% less than Grok Build 0.1 for input ($0.75 vs $1 per 1M tokens), and GPT-5.4 Mini charges 2.3x Grok Build 0.1's output price ($4.50 vs $2 per 1M tokens). For one agent session of 1M input and 100K output tokens with no caching, that is $1.20 on GPT-5.4 Mini and $1.20 on Grok Build 0.1. Prices are each provider's first-party list rates, verified October 17, 2026 and October 17, 2026.

What are the context windows of GPT-5.4 Mini and Grok Build 0.1?

GPT-5.4 Mini has a 400,000-token context window and Grok Build 0.1 256,000 tokens; GPT-5.4 Mini returns up to 128,000 output tokens per response, and no primary source states a max output for Grok Build 0.1.

Are GPT-5.4 Mini and Grok Build 0.1 open weights?

GPT-5.4 Mini is closed-weights and is called through OpenAI's API as gpt-5.4-mini. Grok Build 0.1 is closed-weights and is called through xAI's API as grok-build-0.1.

More comparisons

Sources

GPT-5.4 Mini verified from developers.openai.com; Grok Build 0.1 verified from docs.x.ai. This page is as current as the older of the two: .

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