GPT-5.2 Codex vs GPT-5.5 Pro
openai/gpt-5.2-codex · openai/gpt-5.5-pro
As of October 24, 2026, GPT-5.2 Codex is the cheaper API on UberLLM: $1.40 per million input tokens and $11.19 per million output, versus $25.95 / $155.68 for GPT-5.5 Pro — about 93% less on a blended 3:1 token mix. Both are reached through one OpenAI-compatible key and routed to the cheapest healthy seller, with UberLLM's 10% fee already included, so the price you see is the price you pay. Choose GPT-5.2 Codex to cut cost; choose GPT-5.5 Pro when context size wins — GPT-5.5 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-5.5 Pro, side by side
| Spec | GPT-5.2 Codex | GPT-5.5 Pro |
|---|---|---|
| Price · input / 1M | $1.40 | $25.95 |
| Price · output / 1M | $11.19 | $155.68 |
| Context length | 256,000 | 1,000,000 |
| Max output tokens | 65,536 | 128,000 |
| Input modalities | text | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | — | Yes |
| Reasoning | Yes | — |
| Cheapest seller | UberLLM | UberLLM |
| % off list | 20% off | 14% off |
Live prices via UberLLM, routed to the cheapest healthy seller. The price shown includes UberLLM’s 10% fee. Updated October 24, 2026.
GPT-5.2 Codex vs GPT-5.5 Pro — FAQ
Is GPT-5.2 Codex or GPT-5.5 Pro cheaper?
GPT-5.2 Codex is cheaper on a blended token mix, by about 93%. UberLLM routes every request to the cheapest healthy seller and bills the price shown, with its 10% fee included.
What's the price difference between GPT-5.2 Codex and GPT-5.5 Pro?
GPT-5.2 Codex: $1.40 in / $11.19 out per 1M tokens. GPT-5.5 Pro: $25.95 in / $155.68 out per 1M tokens. That's roughly a 93% blended difference. Prices are live and include UberLLM's 10% fee.
Can I use both GPT-5.2 Codex and GPT-5.5 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.