GPT-5 Nano Pricing
FastOpenAI · 400K tokens context
GPT-5 Nano from OpenAI costs $0.050 per 1 million input tokens and $0.400 per 1 million output tokens as of June 2026 (live OpenRouter data). The model supports a 400,000-token context window (approximately 300,000 words) with a 8K-token maximum output. A typical 1,000-token request costs $0.0000 in input charges; a 10,000-token request costs $0.0005.
| Input price | $0.050 / 1M tokens |
|---|---|
| Output price | $0.400 / 1M tokens |
| Output / input ratio | 8.0× |
| Context window | 400,000 tokens (~300,000 words) |
| Maximum output | 8,192 tokens |
| Cost per 1K tokens (input) | $0.0000 |
| Tier | Fast |
| Last verified |
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
Input Price
$0.050
per 1 million tokens
Output Price
$0.400
per 1 million tokens
Context Window
400K tokens
max 8K output
Cost Examples
| Request Type | Tokens | Input Cost | Output Cost |
|---|---|---|---|
| 1,000 word article | 1,333 | $0.0000666 | $0.00016 |
| 10-page document (2,500 words) | 3,333 | $0.000167 | $0.0004 |
| 1,000 lines of code | 5,000 | $0.00025 | $0.0006 |
| 100K token document | 100,000 | $0.005 | $0.012 |
Output cost estimated at 30% of input token count. Use the calculator for exact figures.
Strengths
- ✓Extremely cheap at $0.050/1M input tokens
- ✓Large 400K-token context window
- ✓Low latency for high-throughput workloads
- ✓Multimodal: understands images as well as text
Limitations
- –Less capable than flagship models on complex reasoning
- –Quality and availability can vary by hosting provider
Best Use Cases
Calculate GPT-5 Nano Costs
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