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OpenAI: GPT-5.3-Codex API Pricing
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 OpenAI: GPT-5.3-Codex cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: GPT-5.3-Codex costs about $45.5 ($17.5 input + $28 output). Try your own volumes in the cost calculator.
What is the official OpenAI: GPT-5.3-Codex price?
| Official (openai) | Catalog (OpenRouter) | |
|---|---|---|
| Input /1M | $1.75 | $1.75 |
| Output /1M | $14 | $14 |
| Cached input /1M | $0.175 | $0.175 |
✓ Matches the official list price. Source: openai official pricing page, checked 2026-10-21.
What are cheaper alternatives to OpenAI: GPT-5.3-Codex?
- Anthropic: Claude Opus 5 (batch) — $2.5 in / $12.5 out per 1M
- Anthropic: Claude Opus 4.8 (batch) — $2.5 in / $12.5 out per 1M
- Anthropic: Claude Opus 4.7 (batch) — $2.5 in / $12.5 out per 1M
- Anthropic: Claude Opus 4.6 (batch) — $2.5 in / $12.5 out per 1M
- Anthropic: Claude Opus 4.5 (batch) — $2.5 in / $12.5 out per 1M
- Amazon: Nova Premier 1.0 — $2.5 in / $12.5 out per 1M
Compare OpenAI: GPT-5.3-Codex with other models
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Frequently asked questions
How much does OpenAI: GPT-5.3-Codex cost?
OpenAI: GPT-5.3-Codex costs $1.75 per 1M input tokens and $14 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $45.5.
What is the context window of OpenAI: GPT-5.3-Codex?
OpenAI: GPT-5.3-Codex has a context window of 400,000 tokens and can return up to 128,000 output tokens per response.
What are cheaper alternatives to OpenAI: GPT-5.3-Codex?
Cheaper models include Anthropic: Claude Opus 5 (batch) ($2.5 in / $12.5 out), Anthropic: Claude Opus 4.8 (batch) ($2.5 in / $12.5 out), Anthropic: Claude Opus 4.7 (batch) ($2.5 in / $12.5 out). See the full list on this page.
Is OpenAI: GPT-5.3-Codex free to use?
No. OpenAI: GPT-5.3-Codex is a paid model at $1.75 input / $14 output per 1M tokens. 20 free models are listed on the free models page.
What is the official price of OpenAI: GPT-5.3-Codex?
On openai's official pricing page (checked 2026-10-21), OpenAI: GPT-5.3-Codex is listed at $1.75 per 1M input tokens and $14 per 1M output tokens. The catalog price tracked on this page matches it exactly.
Provider: openai · Model ID: openai/gpt-5.3-codex · Modality: text+image+file->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices