GPT-5.4 vs Grok 4
Complete pricing and performance comparison between OpenAI's GPT-5.4 and xAI's Grok 4.
Quick Verdict
Cheaper
GPT-5.4
1.2x cheaper input, 1.0x cheaper output
Larger Context
Grok 4
2.0M vs 1.1M
Higher Quality
GPT-5.4
Score: 57 vs 42
Faster
GPT-5.4
75 vs 49 tok/s
Pricing Comparison
| Spec | GPT-5.4 | Grok 4 | Difference |
|---|---|---|---|
| Provider | OpenAI | xAI | |
| Input / 1M tokens | $2.5 | $3 | GPT-5.4 is 17% more expensive |
| Output / 1M tokens | $15 | $15 | Same |
| Context Window | 1.1M | 2.0M | 2x difference |
| Max Output | 128K | 16K | |
| Tokenizer | o200k_base | cl100k_base |
Performance Benchmarks
| Metric | GPT-5.4 | Grok 4 | Winner |
|---|---|---|---|
| Quality Index | 57 | 42 | GPT-5.4 |
| Output Speed | 75 tok/s | 49 tok/s | GPT-5.4 |
| Time to First Token | 169.23s | 9.39s | Grok 4 |
| Value (Quality/$) | 22.8 | 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 | Grok 4 | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0070 | $0.0075 | Same |
10 requests 10K in / 3K out | $0.070 | $0.075 | GPT-5.4 saves $0.0050 |
100 requests 100K in / 30K out | $0.700 | $0.750 | GPT-5.4 saves $0.050 |
1,000 requests 1M in / 300K out | $7.00 | $7.50 | GPT-5.4 saves $0.500 |
10,000 requests 10M in / 3M out | $70.00 | $75.00 | GPT-5.4 saves $5.00 |
1M requests/mo 1B in / 300M out | $7000.00 | $7500.00 | GPT-5.4 saves $500.00 |
Pros & Cons
GPT-5.4 Strengths
- +Cheaper input tokens
- +Higher max output tokens
- +Faster output (75 vs 49 tok/s)
- +Higher quality score (57 vs 42)
Grok 4 Strengths
- +Larger context window (2.0M vs 1.1M)
- +Lower latency (faster first token)
When to Use Each Model
Choose GPT-5.4 for
- →Generating long-form content or detailed code
- →Tasks requiring maximum accuracy and reasoning
- →Real-time applications, chat, or autocomplete
Choose Grok 4 for
- →Long documents, large codebases, or multi-turn conversations
Frequently Asked Questions
Which is cheaper, GPT-5.4 or Grok 4?
For input tokens, GPT-5.4 is 1.2x cheaper at $2.5/1M tokens. For output tokens, GPT-5.4 is 1.0x cheaper at $15/1M tokens. At typical usage (1M input + 300K output), GPT-5.4 costs $7.00 vs Grok 4 at $7.50.
What's the context window difference?
GPT-5.4 supports 1.1M context (1,050,000 tokens), while Grok 4 supports 2.0M (2,000,000 tokens). Grok 4 can handle 2x more context in a single request.
Which model has better benchmarks?
Quality Index: GPT-5.4 scores 57 vs Grok 4 at 42. Speed: GPT-5.4 generates 75 tok/s vs Grok 4 at 49 tok/s. Time to first token: GPT-5.4 at 169.23s vs Grok 4 at 9.39s.
When should I choose GPT-5.4 over Grok 4?
Choose GPT-5.4 when you need: Cheaper input tokens, Higher max output tokens, Faster output (75 vs 49 tok/s), Higher quality score (57 vs 42). Choose Grok 4 when you need: Larger context window (2.0M vs 1.1M), Lower latency (faster first token).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): GPT-5.4 = $70.00, Grok 4 = $75.00. At 10K input + 1K output per request (longer conversations): GPT-5.4 = $400.00, Grok 4 = $450.00.