OpenAI: GPT-5.2 Chat

by OpenAI

GPT-5.2 Chat (AKA Instant) is the fast, lightweight member of the 5.2 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning to selectively “think” on harder queries, improving accuracy on math, coding, and multi-step tasks without slowing down typical conversations. The model is warmer and more conversational by default, with better instruction following and more stable short-form reasoning. GPT-5.2 Chat is designed for high-throughput, interactive workloads where responsiveness and consistency matter more than deep deliberation.

Avg Score

84.9%

239 answers

Avg Latency

4.2s

14 runs

Pricing

$1.75

input

$14.00

output

per 1M tokens

Context

128K

tokens

Alternatives

Models with similar or better quality but different tradeoffs

Same Quality, Cheaper

Models with similar or better performance at a lower cost per token.

Model	Cost
MoonshotAI: Kimi K2 Thinking	-89%
Google: Gemini 3 Flash Preview	-86%
DeepSeek: DeepSeek V3.2 Speciale	-78%
Anthropic: Claude Sonnet 4.5	-42%
Anthropic: Claude Opus 4.5	-11%

Same Quality, Faster

Models with similar or better performance but lower latency.

Model	Latency
Google: Gemini 3 Flash Preview	-56%
Anthropic: Claude Sonnet 4.5	-18%
Anthropic: Claude Opus 4.5	-3%

Same Cost, Better

Models at a similar price point with higher benchmark scores.

Model	Score
Google: Gemini 3 Flash Preview	+5%
OpenAI: GPT-5.2	+3%
Anthropic: Claude Opus 4.5	+0%

Other Models from OpenAI

Compare performance with other models from the same creator

Model	Score	Latency	Cost/1M
OpenAI: GPT-5.2	87.1%	4.8s	$7.88
OpenAI: GPT-5.2 Pro	85.5%	18.2s	$94.50
OpenAI: GPT-5 Mini	80.0%	8.6s	$1.13
OpenAI: GPT-5 Nano	78.8%	13.0s	$0.22
OpenAI: gpt-oss-20b	73.3%	6.2s	$0.06
OpenAI: gpt-oss-120b	47.8%	11.1s	$0.11
OpenAI: GPT-5.1-Codex-Max	—	—	$5.63
OpenAI: GPT-5.1	—	—	$5.63
OpenAI: GPT-5.1 Chat	—	—	$5.63
OpenAI: GPT-5.1-Codex	—	—	$5.63
OpenAI: GPT-5.1-Codex-Mini	—	—	$1.13
OpenAI: gpt-oss-safeguard-20b	—	—	$0.19
OpenAI: GPT-5 Image Mini	—	—	$2.25
OpenAI: GPT-5 Image	—	—	$10.00
OpenAI: o3 Deep Research	—	—	$25.00
OpenAI: o4 Mini Deep Research	—	—	$5.00
OpenAI: GPT-5 Pro	—	—	$67.50
OpenAI: GPT-5 Codex	—	—	$5.63
OpenAI: GPT-4o Audio	—	—	$6.25
OpenAI: GPT-5 Chat	—	—	$5.63
OpenAI: GPT-5	—	—	$5.63
OpenAI: gpt-oss-120b	—	—	$0.0000
OpenAI: gpt-oss-120b	—	—	$0.11
OpenAI: gpt-oss-20b	—	—	$0.0000
OpenAI: o3 Pro	—	—	$50.00
OpenAI: Codex Mini	—	—	$3.75
OpenAI: o4 Mini High	—	—	$2.75
OpenAI: o3	—	—	$5.00
OpenAI: o4 Mini	—	—	$2.75
OpenAI: GPT-4.1	—	—	$5.00
OpenAI: GPT-4.1 Mini	—	—	$1.00
OpenAI: GPT-4.1 Nano	—	—	$0.25
OpenAI: o1-pro	—	—	$375.00
OpenAI: GPT-4o-mini Search Preview	—	—	$0.38
OpenAI: GPT-4o Search Preview	—	—	$6.25
OpenAI: o3 Mini High	—	—	$2.75
OpenAI: o3 Mini	—	—	$2.75
OpenAI: o1	—	—	$37.50
OpenAI: GPT-4o (2024-11-20)	—	—	$6.25
OpenAI: ChatGPT-4o	—	—	$10.00
OpenAI: GPT-4o (2024-08-06)	—	—	$6.25
OpenAI: GPT-4o-mini (2024-07-18)	—	—	$0.38
OpenAI: GPT-4o-mini	—	—	$0.38
OpenAI: GPT-4o (2024-05-13)	—	—	$10.00
OpenAI: GPT-4o	—	—	$6.25
OpenAI: GPT-4o	—	—	$12.00
OpenAI: GPT-4 Turbo	—	—	$20.00
OpenAI: GPT-3.5 Turbo (older v0613)	—	—	$1.50
OpenAI: GPT-4 Turbo Preview	—	—	$20.00
OpenAI: GPT-4 Turbo (older v1106)	—	—	$20.00
OpenAI: GPT-3.5 Turbo Instruct	—	—	$1.75
OpenAI: GPT-3.5 Turbo 16k	—	—	$3.50
OpenAI: GPT-4 (older v0314)	—	—	$45.00
OpenAI: GPT-4	—	—	$45.00
OpenAI: GPT-3.5 Turbo	—	—	$1.00

Benchmark Performance

How this model performs across different benchmarks

Benchmark	Score	Rank
Math Bench: Addition (1-10)	100.0%	1 / 35
Math Bench: Subtraction (1-10)	100.0%	1 / 35
Math Bench: Multiplication (1-10)	100.0%	1 / 35
Math Bench: Division (1-10)	100.0%	17 / 35
Math Bench: Arithmetic (1-100)	100.0%	1 / 35
Math Bench: Arithmetic (1-1000)	100.0%	4 / 35
Venture Capital Terms Benchmark	100.0%	4 / 25
Karlsruhe Local Knowledge Benchmark	95.6%	3 / 35
Character Frequency Bench	90.9%	6 / 35
Spatial Reasoning: Germany	90.0%	23 / 35
Product Recommendations	78.8%	13 / 36
Money Boy Cultural Literacy Test	57.1%	9 / 35
German Memelord Bench	37.2%	7 / 35
Karl Lorey knowlege	1.1%	22 / 36

Price vs Performance

Compare cost efficiency across all models

Current model

Other models

X-axis uses log scale for better visualization of price range

Score Over Time

Performance trends across all benchmark runs

Benchmark Activity

Number of benchmark runs over time

Quickstart

Get started with this model using OpenRouter

View on OpenRouter

import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "openai/gpt-5.2-chat",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

console.log(completion.choices[0].message.content);

Get your API key at openrouter.ai/keys