GPT-5.4 Mini vs Grok 4
Complete pricing and performance comparison between OpenAI's GPT-5.4 Mini and xAI's Grok 4.
Quick Verdict
Cheaper
GPT-5.4 Mini
4.0x cheaper input, 3.3x cheaper output
Larger Context
Grok 4
2.0M vs 400K
Pricing Comparison
| Spec | GPT-5.4 Mini | Grok 4 | Difference |
|---|---|---|---|
| Provider | OpenAI | xAI | |
| Input / 1M tokens | $0.75 | $3 | GPT-5.4 Mini is 75% more expensive |
| Output / 1M tokens | $4.5 | $15 | GPT-5.4 Mini is 70% more expensive |
| Context Window | 400K | 2.0M | 5x difference |
| Max Output | 128K | 16K | |
| Tokenizer | o200k_base | cl100k_base |
Performance Benchmarks
| Metric | GPT-5.4 Mini | Grok 4 | Winner |
|---|---|---|---|
| Quality Index | -- | 42 | N/A |
| Output Speed | -- | 43 tok/s | N/A |
| Value (Quality/$) | -- | 13.8 | Higher = better value |
Benchmark data from Artificial Analysis. Quality Index is a composite score across reasoning, coding, and knowledge tasks.
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | GPT-5.4 Mini | Grok 4 | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0021 | $0.0075 | GPT-5.4 Mini saves $0.0054 |
10 requests 10K in / 3K out | $0.021 | $0.075 | GPT-5.4 Mini saves $0.054 |
100 requests 100K in / 30K out | $0.210 | $0.750 | GPT-5.4 Mini saves $0.540 |
1,000 requests 1M in / 300K out | $2.10 | $7.50 | GPT-5.4 Mini saves $5.40 |
10,000 requests 10M in / 3M out | $21.00 | $75.00 | GPT-5.4 Mini saves $54.00 |
1M requests/mo 1B in / 300M out | $2100.00 | $7500.00 | GPT-5.4 Mini saves $5400.00 |
Pros & Cons
GPT-5.4 Mini Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Higher max output tokens
Grok 4 Strengths
- +Larger context window (2.0M vs 400K)
When to Use Each Model
Choose GPT-5.4 Mini for
- →Budget-conscious projects where cost is the primary factor
- →Generating long-form content or detailed code
Choose Grok 4 for
- →Long documents, large codebases, or multi-turn conversations
Frequently Asked Questions
Which is cheaper, GPT-5.4 Mini or Grok 4?
For input tokens, GPT-5.4 Mini is 4.0x cheaper at $0.75/1M tokens. For output tokens, GPT-5.4 Mini is 3.3x cheaper at $4.5/1M tokens. At typical usage (1M input + 300K output), GPT-5.4 Mini costs $2.10 vs Grok 4 at $7.50.
What's the context window difference?
GPT-5.4 Mini supports 400K context (400,000 tokens), while Grok 4 supports 2.0M (2,000,000 tokens). Grok 4 can handle 5x more context in a single request.
Which model has better benchmarks?
When should I choose GPT-5.4 Mini over Grok 4?
Choose GPT-5.4 Mini when you need: Cheaper input tokens, Cheaper output tokens, Higher max output tokens. Choose Grok 4 when you need: Larger context window (2.0M vs 400K).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): GPT-5.4 Mini = $21.00, Grok 4 = $75.00. At 10K input + 1K output per request (longer conversations): GPT-5.4 Mini = $120.00, Grok 4 = $450.00.