GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
Performance
The last 24 hours, all hosts combined. When one host fails, BazaarLink automatically routes to the next healthy one.
Hosts
The same model runs on several hosts, and each host's price and speed can differ. BazaarLink chooses by price, speed and stability, and switches to the next host when one misbehaves; you can also pin a host in the request.
| Host | Input /M | Output /M | Cache read /M | Cache write /M | First token | Throughput | Availability (24h) |
|---|---|---|---|---|---|---|---|
 OpenAIZDR | $1.75 | $14.00 | $0.17 | — | 1.04s | — | 100.0% |
 Microsoft AzureZDR | $1.75 | $14.00 | $0.17 | — | 0.48s | 50 tps | 99.9% |
Benchmarks
All scores come from Artificial Analysis's independent third-party evaluation; BazaarLink takes no part in the testing.
| 1 | Muse Spark 1.3 (max) __aa_parking__58a40aba-a44f-457f-9cca-75b43d4e6934 | 76 | $1.25 / $4.25 |
| 2 | GPT-6 Astra (Non-reasoning) gpt-6-astra-non-reasoning | 76 | — / — |
| 3 | Agnes 2.5 Pro Alpha (based on Qwen3.5 397B A17B) agnes-ai/agnes-2-5-pro-alpha | 59 | $0.45 / $0.9 |
| 4 | Solar Pro 4 __aa_parking__1b64aa81-c223-4b8f-909b-82185a234765 | 53 | $0.3 / $1.2 |
| 5 | G9v3-39A5B ai9star/__aa_parking__c5ccda86-5e84-4b69-9247-6d4287fc3336 | 32 | $0 / $0 |
Price comparison
BazaarLink's price, next to the market standard Artificial Analysis observes.
BazaarLink price This site
Market reference Artificial Analysis
Quick start
Just change base_url to use GPT-5.3-Codex through the BazaarLink API.
from openai import OpenAI
client = OpenAI(
base_url="https://api.bazaarlink.ai/v1",
api_key="sk-bl-YOUR_API_KEY",
)
response = client.chat.completions.create(
model="openai/gpt-5.3-codex",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)FAQ
What is GPT-5.3-Codex?
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
How much does the GPT-5.3-Codex API cost?
GPT-5.3-Codex costs $1.75 per 1M input tokens and $14.00 per 1M output tokens when accessed through BazaarLink.
How do I use GPT-5.3-Codex with the OpenAI SDK?
Set base_url to "https://api.bazaarlink.ai/v1" and use model ID "openai/gpt-5.3-codex". All OpenAI SDK methods (chat.completions, embeddings, streaming) work without code changes.
What is the context window for GPT-5.3-Codex?
GPT-5.3-Codex supports a context window of 400,000 tokens.
Is GPT-5.3-Codex available for free?
GPT-5.3-Codex is a paid model. BazaarLink offers free trial credits on registration so you can test it without a credit card.
Explore
- Billed in USD with TWD quotes plus Taiwan e-invoices, so Taiwanese teams do not need an overseas card
- OpenAI-compatible API, no code rewrite
- When an upstream source has a problem, the request can try another available source; if none is available you get an error
- Chinese-language support from a local team