GPT-4o Mini vs GPT-5
Complete pricing and performance comparison between OpenAI's GPT-4o Mini and OpenAI's GPT-5.
Quick Verdict
Cheaper
GPT-4o Mini
8.3x cheaper input, 16.7x cheaper output
Larger Context
GPT-5
400K vs 128K
Higher Quality
GPT-5
Score: 45 vs 13
Faster
GPT-4o Mini
61 vs 60 tok/s
Pricing Comparison
| Spec | GPT-4o Mini | GPT-5 | Difference |
|---|---|---|---|
| Provider | OpenAI | OpenAI | |
| Input / 1M tokens | $0.15 | $1.25 | GPT-4o Mini is 88% more expensive |
| Output / 1M tokens | $0.6 | $10 | GPT-4o Mini is 94% more expensive |
| Context Window | 128K | 400K | 3x difference |
| Max Output | 16K | 16K |
Performance Benchmarks
| Metric | GPT-4o Mini | GPT-5 | Winner |
|---|---|---|---|
| Quality Index | 13 | 45 | GPT-5 |
| Output Speed | 61 tok/s | 60 tok/s | GPT-4o Mini |
| Time to First Token | 0.58s | 117.69s | GPT-4o Mini |
| Value (Quality/$) | 84.0 | 35.7 | 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-4o Mini | GPT-5 | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0003 | $0.0042 | GPT-4o Mini saves $0.0039 |
10 requests 10K in / 3K out | $0.0033 | $0.042 | GPT-4o Mini saves $0.039 |
100 requests 100K in / 30K out | $0.033 | $0.425 | GPT-4o Mini saves $0.392 |
1,000 requests 1M in / 300K out | $0.330 | $4.25 | GPT-4o Mini saves $3.92 |
10,000 requests 10M in / 3M out | $3.30 | $42.50 | GPT-4o Mini saves $39.20 |
1M requests/mo 1B in / 300M out | $330.00 | $4250.00 | GPT-4o Mini saves $3920.00 |
Pros & Cons
GPT-4o Mini Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Faster output (61 vs 60 tok/s)
- +Lower latency (faster first token)
GPT-5 Strengths
- +Larger context window (400K vs 128K)
- +Higher quality score (45 vs 13)
When to Use Each Model
Choose GPT-4o Mini for
- →Budget-conscious projects where cost is the primary factor
- →Real-time applications, chat, or autocomplete
Choose GPT-5 for
- →Long documents, large codebases, or multi-turn conversations
- →Tasks requiring maximum accuracy and reasoning
Frequently Asked Questions
Which is cheaper, GPT-4o Mini or GPT-5?
For input tokens, GPT-4o Mini is 8.3x cheaper at $0.15/1M tokens. For output tokens, GPT-4o Mini is 16.7x cheaper at $0.6/1M tokens. At typical usage (1M input + 300K output), GPT-4o Mini costs $0.330 vs GPT-5 at $4.25.
What's the context window difference?
GPT-4o Mini supports 128K context (128,000 tokens), while GPT-5 supports 400K (400,000 tokens). GPT-5 can handle 3x more context in a single request.
Which model has better benchmarks?
Quality Index: GPT-4o Mini scores 13 vs GPT-5 at 45. Speed: GPT-4o Mini generates 61 tok/s vs GPT-5 at 60 tok/s. Time to first token: GPT-4o Mini at 0.58s vs GPT-5 at 117.69s.
When should I choose GPT-4o Mini over GPT-5?
Choose GPT-4o Mini when you need: Cheaper input tokens, Cheaper output tokens, Faster output (61 vs 60 tok/s), Lower latency (faster first token). Choose GPT-5 when you need: Larger context window (400K vs 128K), Higher quality score (45 vs 13).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): GPT-4o Mini = $3.30, GPT-5 = $42.50. At 10K input + 1K output per request (longer conversations): GPT-4o Mini = $21.00, GPT-5 = $225.00.