OpenAI: GPT-5 Nano
openai/gpt-5-nanoGPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments.
Modalities
In / out per 1M$0.05 / $0.40
Context391K
ReleasedAug 7, 2025
Providers
4 providers serve this model upstream.
| Provider | Input /M | Output /M | Cache read /M | Latency P50 | Throughput P50 | Uptime |
|---|---|---|---|---|---|---|
 OpenAI | $0.03 | $0.20 | $0.00 | 4.31s | 63 tps | 100% |
| OpenAI | $0.05 | $0.40 | $0.01 | 1.29s | 73 tps | 100% |
 Azureswedencentral | $0.06 | $0.44 | $0.01 | 3.75s | 76 tps | 100% |
| Azure | $0.05 | $0.40 | $0.01 | 2.34s | 28 tps | 99.89% |
Market-wide measurements, refreshed every 15 minutes. They describe who serves GPT-5 Nano in general, not how ProjectCOZY routes your requests.
Pricing
List rates per 1M tokens — what GPT-5 Nano costs pay-as-you-go elsewhere, not what you pay here.
Input
$0.05
per 1M tokens
Output
$0.40
per 1M tokens
Cache read
$0.01
per 1M cached tokens
Included in every pass
GPT-5 Nano is included in every ProjectCOZY pass at no extra cost — one flat rate, no per-token metering. The rates above are there for comparison.
Performance
Time to first token and output speed across every provider, over the last 3 days.
0.0s5.0s10.0s15.0s20.0s
Oct 11, 12 AMOct 11, 8 AMOct 11, 4 PMOct 12, 12 AMOct 12, 8 AMOct 12, 4 PMOct 13, 12 AMOct 13, 8 AMOct 13, 4 PMOct 14, 12 AMOct 14, 8 AM
Azure OpenAI OpenAI Azure (swedencentral)
0 tok/s200 tok/s400 tok/s600 tok/s800 tok/s
Oct 11, 12 AMOct 11, 8 AMOct 11, 4 PMOct 12, 12 AMOct 12, 8 AMOct 12, 4 PMOct 13, 12 AMOct 13, 8 AMOct 13, 4 PMOct 14, 12 AMOct 14, 8 AM
Azure OpenAI OpenAI Azure (swedencentral)
Uptime
100% of requests were served successfully over the last 3 days, across all providers.
Last 3 daysAvailability 100%
Oct 11, 2:00 PMNow
Availability over the last 24 hoursAvailability 99.98%
100% 98% 97% 95%
Oct 13, 2:40 PMNow
Apps
Tools that most often run GPT-5 Nano, by tokens this week.
Activity
752.7B tokens processed market-wide in the last month.
020.0B40.0B60.0B80.0B
Sep 14Sep 19Sep 24Sep 29Oct 4Oct 9Oct 14
Tokens
FAQ
Which model id do I use for GPT-5 Nano?
openai/gpt-5-nano. Send it as the model field from any OpenAI-compatible client, against http://192.168.1.55/v1.
How much context does GPT-5 Nano hold?
400,000 tokens per request, of which up to 128,000 can be the response.
What can it accept and return?
Input: text, image, file. Output: text.
What does GPT-5 Nano cost on a pass?
Nothing beyond the pass itself. Pay-as-you-go elsewhere it lists at $0.05 per 1M input tokens and $0.40 per 1M output tokens.
How current is its knowledge?
Training data runs to May 2024. Anything later has to come from your prompt or a tool call.
Who built GPT-5 Nano?
OpenAI, in the GPT family.
Explore
Other models your pass can call.
