GPT-5.2 Codex vs GPT-5.4 Pro
openai/gpt-5.2-codex · openai/gpt-5.4-pro
As of October 31, 2026, GPT-5.2 Codex is the cheaper API on UberLLM: $1.48 per million input tokens and $11.84 per million output, versus $19.04 / $114.21 for GPT-5.4 Pro, about 90% less when output is 3 tokens for every input token. These are the median prices buyers paid over the last 24 hours. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GPT-5.2 Codex to cut cost; choose GPT-5.4 Pro when context size wins. GPT-5.4 Pro carries the larger context window (1,000,000 vs 256,000 tokens), which can matter for long-document work.
GPT-5.2 Codex vs GPT-5.4 Pro, side by side
| Spec | GPT-5.2 Codex | GPT-5.4 Pro |
|---|---|---|
| Price · input / 1M | $1.48 | $19.04 |
| Price · output / 1M | $11.84 | $114.21 |
| Context length | 256,000 | 1,000,000 |
| Max output tokens | 65,536 | 128,000 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 15% off | 37% off |
Median prices buyers paid on UberLLM over the last 24 hours. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated October 31, 2026.
GPT-5.2 Codex vs GPT-5.4 Pro — FAQ
Is GPT-5.2 Codex or GPT-5.4 Pro cheaper?
GPT-5.2 Codex is cheaper on a blended token mix, by about 90%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between GPT-5.2 Codex and GPT-5.4 Pro?
GPT-5.2 Codex: $1.48 in / $11.84 out per 1M tokens. GPT-5.4 Pro: $19.04 in / $114.21 out per 1M tokens. That's roughly a 90% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GPT-5.2 Codex and GPT-5.4 Pro with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.