GPT-5.4 Nano vs o3
Complete pricing and performance comparison between OpenAI's GPT-5.4 Nano and OpenAI's o3.
Quick Verdict
Cheaper
GPT-5.4 Nano
10.0x cheaper input, 6.4x cheaper output
Larger Context
GPT-5.4 Nano
400K vs 200K
Pricing Comparison
| Spec | GPT-5.4 Nano | o3 | Difference |
|---|---|---|---|
| Provider | OpenAI | OpenAI | |
| Input / 1M tokens | $0.2 | $2 | GPT-5.4 Nano is 90% more expensive |
| Output / 1M tokens | $1.25 | $8 | GPT-5.4 Nano is 84% more expensive |
| Context Window | 400K | 200K | 2x difference |
| Max Output | 128K | 100K |
Performance Benchmarks
| Metric | GPT-5.4 Nano | o3 | Winner |
|---|---|---|---|
| Quality Index | -- | 38 | N/A |
| Output Speed | -- | 74 tok/s | N/A |
| Value (Quality/$) | -- | 19.2 | 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 Nano | o3 | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0006 | $0.0044 | GPT-5.4 Nano saves $0.0038 |
10 requests 10K in / 3K out | $0.0057 | $0.044 | GPT-5.4 Nano saves $0.038 |
100 requests 100K in / 30K out | $0.058 | $0.440 | GPT-5.4 Nano saves $0.383 |
1,000 requests 1M in / 300K out | $0.575 | $4.40 | GPT-5.4 Nano saves $3.83 |
10,000 requests 10M in / 3M out | $5.75 | $44.00 | GPT-5.4 Nano saves $38.25 |
1M requests/mo 1B in / 300M out | $575.00 | $4400.00 | GPT-5.4 Nano saves $3825.00 |
Pros & Cons
GPT-5.4 Nano Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (400K vs 200K)
- +Higher max output tokens
o3 Strengths
Part of the OpenAI ecosystem
When to Use Each Model
Choose GPT-5.4 Nano for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
Choose o3 for
- →Projects already integrated with OpenAI's ecosystem
Frequently Asked Questions
Which is cheaper, GPT-5.4 Nano or o3?
For input tokens, GPT-5.4 Nano is 10.0x cheaper at $0.2/1M tokens. For output tokens, GPT-5.4 Nano is 6.4x cheaper at $1.25/1M tokens. At typical usage (1M input + 300K output), GPT-5.4 Nano costs $0.575 vs o3 at $4.40.
What's the context window difference?
GPT-5.4 Nano supports 400K context (400,000 tokens), while o3 supports 200K (200,000 tokens). GPT-5.4 Nano can handle 2x more context in a single request.
Which model has better benchmarks?
When should I choose GPT-5.4 Nano over o3?
Choose GPT-5.4 Nano when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (400K vs 200K), Higher max output tokens. Choose o3 when you need: a OpenAI ecosystem model.
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): GPT-5.4 Nano = $5.75, o3 = $44.00. At 10K input + 1K output per request (longer conversations): GPT-5.4 Nano = $32.50, o3 = $280.00.