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Comparison · 2 models · Updated Oct 4, 2026

GPT-5.2 Codex vs GPT-5.2 Chat

GPT-5.2 Codex comes out ahead, 42 to 35 on our weighted score.

  1. Our pick

    OpenAI

    GPT-5.2 Codex

    Released Dec 11, 2025

    42/100
    • ECI—
    • Price$1.75 / $14.00
    • Context400K
    Full specs Remove GPT-5.2 Codex

  2. OpenAI

    GPT-5.2 Chat

    Released Dec 11, 2025Deprecated

    35/100
    • ECI—
    • Price$1.75 / $14.00
    • Context128K
    Full specs Remove GPT-5.2 Chat

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

GPT-5.2 Codex is our pick

GPT-5.2 Codex is the better all-round choice, scoring 42/100 against GPT-5.2 Chat (35). It leads on inputs & features and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

  • CapabilityNot enough dataNo independent benchmark covers every model here yet
  • Lowest priceSame priceGPT-5.2 Codex $4.81 · GPT-5.2 Chat $4.81 per 1M tokens (3:1 blend)
  • Longest contextGPT-5.2 CodexGPT-5.2 Codex 400,000 · GPT-5.2 Chat 128,000 tokens
  • Widest inputsGPT-5.2 CodexGPT-5.2 Codex: Text, Images, PDFs · GPT-5.2 Chat: Text, Images
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightGPT-5.2 CodexGPT-5.2 Chat
Price50%1818
Inputs & features30%8070
Context window20%4424
Overall100%42/10035/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

GPT-5.2 Codex vs GPT-5.2 Chat specifications side by side
SpecificationGPT-5.2 CodexOpenAIGPT-5.2 ChatOpenAI
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$1.75$1.75
Output$14.00$14.00
Cached input—$0.175
Blended (3:1)$4.81$4.81
Long-context rateSame rateSame rate
Price sourceMedian of 11 providersOfficial OpenAI API
Limits
Context window400,000 tokens (best)128,000 tokens
Max output128,000 tokens (best)16,384 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioNoNo
VideoNoNo
ReasoningYesYesmedium
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryProprietary
API model ID—gpt-5.2-chat-latest
API providers11 (best)3
ReleasedDec 11, 2025Dec 11, 2025
Knowledge cutoffAug 31, 2025Aug 31, 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • GPT-5.2 Codex$45.50
  • GPT-5.2 Chat$45.50
04 — Questions

Which should you choose?

Which is better: GPT-5.2 Codex or GPT-5.2 Chat?

GPT-5.2 Codex is the better all-round choice, scoring 42/100 against GPT-5.2 Chat (35). It leads on inputs & features and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

Which is cheaper, GPT-5.2 Codex or GPT-5.2 Chat?

GPT-5.2 Codex and GPT-5.2 Chat cost the same: $1.75 input / $14.00 output per million tokens.

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. GPT-5.2 Codex has not been scored yet and GPT-5.2 Chat has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for GPT-5.2 Codex and GPT-5.2 Chat yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.

Which has the bigger context window?

GPT-5.2 Codex has the largest context window at 400,000 tokens, against 128,000 for GPT-5.2 Chat. Maximum output per response: GPT-5.2 Codex up to 128,000, GPT-5.2 Chat up to 16,384 tokens.

Which can read images, PDFs, audio or video?

GPT-5.2 Codex accepts text, images and PDFs; GPT-5.2 Chat accepts text and images. GPT-5.2 Codex handles the widest range of inputs.

Are any of these open source?

No. GPT-5.2 Codex and GPT-5.2 Chat are proprietary and only available through APIs and apps.

Which is newer?

GPT-5.2 Codex is the newest, released Dec 11, 2025. GPT-5.2 Chat came out Dec 11, 2025. Knowledge cutoff: GPT-5.2 Codex Aug 31, 2025, GPT-5.2 Chat Aug 31, 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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