GPT-5.4 Mini vs o4 Mini
Complete pricing and performance comparison between OpenAI's GPT-5.4 Mini and OpenAI's o4 Mini.
Quick Verdict
Cheaper
GPT-5.4 Mini (input) / o4 Mini (output)
Input: 1.5x diff, Output: 1.0x diff
Larger Context
GPT-5.4 Mini
400K vs 200K
Pricing Comparison
| Spec | GPT-5.4 Mini | o4 Mini | Difference |
|---|---|---|---|
| Provider | OpenAI | OpenAI | |
| Input / 1M tokens | $0.75 | $1.1 | GPT-5.4 Mini is 32% more expensive |
| Output / 1M tokens | $4.5 | $4.4 | o4 Mini is 2% more expensive |
| Context Window | 400K | 200K | 2x difference |
| Max Output | 128K | 100K |
Performance Benchmarks
| Metric | GPT-5.4 Mini | o4 Mini | Winner |
|---|---|---|---|
| Quality Index | -- | 33 | N/A |
| Output Speed | -- | 148 tok/s | N/A |
| Value (Quality/$) | -- | 30.1 | 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 | o4 Mini | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0021 | $0.0024 | Same |
10 requests 10K in / 3K out | $0.021 | $0.024 | GPT-5.4 Mini saves $0.0032 |
100 requests 100K in / 30K out | $0.210 | $0.242 | GPT-5.4 Mini saves $0.032 |
1,000 requests 1M in / 300K out | $2.10 | $2.42 | GPT-5.4 Mini saves $0.320 |
10,000 requests 10M in / 3M out | $21.00 | $24.20 | GPT-5.4 Mini saves $3.20 |
1M requests/mo 1B in / 300M out | $2100.00 | $2420.00 | GPT-5.4 Mini saves $320.00 |
Pros & Cons
GPT-5.4 Mini Strengths
- +Cheaper input tokens
- +Larger context window (400K vs 200K)
- +Higher max output tokens
o4 Mini Strengths
- +Cheaper output tokens
When to Use Each Model
Choose GPT-5.4 Mini for
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
Choose o4 Mini for
- →Projects already integrated with OpenAI's ecosystem
Frequently Asked Questions
Which is cheaper, GPT-5.4 Mini or o4 Mini?
For input tokens, GPT-5.4 Mini is 1.5x cheaper at $0.75/1M tokens. For output tokens, o4 Mini is 1.0x cheaper at $4.4/1M tokens. At typical usage (1M input + 300K output), GPT-5.4 Mini costs $2.10 vs o4 Mini at $2.42.
What's the context window difference?
GPT-5.4 Mini supports 400K context (400,000 tokens), while o4 Mini supports 200K (200,000 tokens). GPT-5.4 Mini can handle 2x more context in a single request.
Which model has better benchmarks?
When should I choose GPT-5.4 Mini over o4 Mini?
Choose GPT-5.4 Mini when you need: Cheaper input tokens, Larger context window (400K vs 200K), Higher max output tokens. Choose o4 Mini when you need: Cheaper output tokens.
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): GPT-5.4 Mini = $21.00, o4 Mini = $24.20. At 10K input + 1K output per request (longer conversations): GPT-5.4 Mini = $120.00, o4 Mini = $154.00.