GPT-5.3-Codex
OpenAI's agentic coding model for Codex and similar environments, replacing GPT-5.2-Codex.
- Context
- 400K tokens
- Max output
- 128K
- Cutoff
- Released
Hosted API price
List price via OpenAI · per 1M tokens
- Input
- $1.75 /1M
- Output
- $14.00 /1M
- Hosted by
-
3 providers
Hosted API pricing
How we price
Order
Providers are listed cheapest input rate first, then by output rate, a tie going to the creator's own listing. A provider that lists the model without a published rate sits at the end.
Prices
Base-tier, on-demand rates in USD per 1M tokens, converted at ECB reference rates where a provider publishes in another currency. Cached-input and batch rates show only where a provider publishes them. "Cheapest" marks the one provider with the lowest input and output pair; a tie wears no badge.
Cost
Input rate times the input tokens plus output rate times the output tokens, at the monthly volume set above the table. Cached-input, batch, long-context and reasoning-token billing are not modelled.
Transparency and funding
- Affiliates: Affiliate links are marked. We may earn a commission if you click them, but commissions never affect the order.
Every provider serving GPT-5.3-Codex, cheapest input first. Set your monthly volume to see what each would bill.
| Provider | Input /1M | Output /1M | Cached input /1M | Cost at 10M in + 2M out | Link |
|---|---|---|---|---|---|
|
OpenAI
Creator
|
$1.75 | $14.00 | $0.18 | $45.50 | Visit website |
|
DigitalOcean
|
$1.75 | $14.00 | $0.18 | $45.50 | Visit website |
|
Azure
|
$1.75 | $14.00 | $0.18 | $45.50 | Visit website |
Heads up: Base-tier, on-demand rates per 1M tokens; cached, batch and long-context tiers excluded. A provider may serve a shorter context or a quantized build than the creator's release. Verify before provisioning. More on how we price.
Similarly priced models
The models nearest GPT-5.3-Codex by blended rate, each at its own cheapest provider.
| Model | Blended /1M | Input /1M | Output /1M | Context | Cutoff | vs GPT-5.3-Codex |
|---|---|---|---|---|---|---|
|
GPT-5.6 Terra
OpenAI
|
$3.6667 | $2.00 | $12.00 | 1M | Feb 2026 | −3% |
Kimi K3
Moonshot AI
|
$3.6667 | $2.00 | $12.00 | 1M | −3% | |
Command A
Cohere
|
$3.75 | $2.50 | $10.00 | 256K | −1% | |
|
GPT-4o
OpenAI
|
$3.75 | $2.50 | $10.00 | 128K | Oct 2023 | −1% |
|
GPT-5.2
OpenAI
|
$3.7917 | $1.75 | $14.00 | 400K | Aug 2025 | 0% |
|
GPT-5.3-Codex
This model
OpenAI
|
$3.7917 | $1.75 | $14.00 | 400K | Aug 2025 | |
|
GPT-5.4
OpenAI
|
$4.5833 | $2.50 | $15.00 | 1M | Aug 2025 | +21% |
Claude Sonnet 4.5
Anthropic
|
$5.00 | $3.00 | $15.00 | 200K | Jan 2025 | +32% |
|
Claude Sonnet 4.6
Anthropic
|
$5.00 | $3.00 | $15.00 | 1M | Aug 2025 | +32% |
|
Claude Opus 4.5
Anthropic
|
$8.3333 | $5.00 | $25.00 | 200K | May 2025 | +120% |
|
Claude Opus 4.6
Anthropic
|
$8.3333 | $5.00 | $25.00 | 1M | May 2025 | +120% |
USD per 1M tokens at each model's cheapest listed provider. Blended is the cost of 10M input plus 2M output tokens, spread over the 12M.
Capabilities
What GPT-5.3-Codex accepts and can do, as published by OpenAI.
- Text Accepts and generates natural-language text.
- Image Accepts images as input alongside text.
- Reasoning Thinks before it answers, always on or as a switchable mode.
- Function calling Connect to external tools, APIs, and systems.
- Structured output Return responses in structured formats like JSON.
- Web search Search the web for up-to-date information.
Common questions
What is GPT-5.3-Codex good for?
Agent coding in Codex or similar environments, which OpenAI says replaces GPT-5.2-Codex.
When is GPT-5.3-Codex not a good fit?
General assistant work that leans on the wider hosted tool set: it has no code execution, file upload, MCP or image generation. No audio input, and closed weights, so no self-hosting.
What is the cheapest way to run GPT-5.3-Codex?
The cheapest hosted rate is $1.75 / $14.00 per 1M tokens via OpenAI.
Can I self-host GPT-5.3-Codex?
No. OpenAI does not publish the weights; GPT-5.3-Codex is available only through hosted APIs.
More from OpenAI
-
GPT-5.2
400K context · cutoff Aug 2025
From $1.75 / $14.00 /1M in / out at the cheapest provider
-
GPT-4o
128K context · cutoff Oct 2023
From $2.50 / $10.00 /1M in / out at the cheapest provider
-
GPT-5.6 Terra
1M context · cutoff Feb 2026
From $2.00 / $12.00 /1M in / out at the cheapest provider
-
GPT-5.6 Sol
1M context · cutoff Feb 2026
From $2.00 / $10.00 /1M in / out at the cheapest provider
-
GPT-5.4
1M context · cutoff Aug 2025
From $2.50 / $15.00 /1M in / out at the cheapest provider
-
GPT-4.1
1M context · cutoff Jun 2024
From $2.00 / $8.00 /1M in / out at the cheapest provider
-
o3
200K context · cutoff Jun 2024
From $2.00 / $8.00 /1M in / out at the cheapest provider
-
GPT-5
400K context · cutoff Sep 2024
From $1.25 / $10.00 /1M in / out at the cheapest provider