How much does the GPT-5.2 API cost?

GPT-5.2 costs $1.75 per million input tokens and $14 per million output tokens, with cached input at $0.17 per million. A workload of 10M input and 1.5M output tokens per month costs about $38.50.

What is the context window of GPT-5.2?

GPT-5.2 supports a context window of 400,000 tokens (400K), with up to 128K output tokens per response.

Is GPT-5.2 open source?

No — GPT-5.2 is a proprietary model available through OpenAI's API and partner platforms.

What are the best alternatives to GPT-5.2?

The closest alternatives by overall capability are Qwen3-Max, Gemini 3 Pro, Gemini 2.5 Pro, DeepSeek V3.2. See the comparison pages for detailed head-to-head breakdowns.

GPT-5.2

Name: GPT-5.2
Price: 1.75 USD
Author: OpenAI

OpenAI·Dec 2025reasoningproprietary

GPT-5.2 shipped in December 2025 as a tuned successor to GPT-5.1, improving coding, instruction following and agentic reliability while keeping the 400K context window. Since GPT-5.5 took over the flagship slot, GPT-5.2 has become OpenAI's price-performance workhorse — roughly a third of the flagship's input price. It remains a strong default for production assistants and coding workloads that don't need a 1M context.

Benchmark results

SWE-bench VerifiedCoding · #12 of 33~77.9%

Where it shines

Excellent quality-per-dollar within the OpenAI lineup
Reliable tool calling and structured outputs
400K context covers most production workloads

Alternatives to GPT-5.2

Qwen3-Max

Alibaba's trillion-parameter API flagship — frontier-adjacent quality with strong agentic tool use at mid-tier prices.

Gemini 3 Pro

Google's November 2025 frontier breakout — 91.9% GPQA Diamond and 37.5% HLE made it the reasoning leader of its generation.

Gemini 2.5 Pro

Google's 2025 workhorse flagship — first mainstream thinking model with a 1M context, still widely deployed.

DeepSeek V3.2

The sparse-attention release that halved DeepSeek's already-lowest-in-class prices while keeping GPT-class quality.

Frequently asked questions

How much does the GPT-5.2 API cost?: GPT-5.2 costs $1.75 per million input tokens and $14 per million output tokens, with cached input at $0.17 per million. A workload of 10M input and 1.5M output tokens per month costs about $38.50.
What is the context window of GPT-5.2?: GPT-5.2 supports a context window of 400,000 tokens (400K), with up to 128K output tokens per response.
Is GPT-5.2 open source?: No — GPT-5.2 is a proprietary model available through OpenAI's API and partner platforms.
What are the best alternatives to GPT-5.2?: The closest alternatives by overall capability are Qwen3-Max, Gemini 3 Pro, Gemini 2.5 Pro, DeepSeek V3.2. See the comparison pages for detailed head-to-head breakdowns.