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ModelCap

GPT-5.2 Chat

All-versions archive #11Arena #22API only

OpenAI·openai/gpt-5.2-chat

GPT-5.2 Chat is a language model published by OpenAI. 2 OpenRouter endpoints are published in the latest snapshot. It accepts file, image, text input and returns text. The published context limit is 128K tokens. The catalogue declares support for tool use, structured outputs.

ModelCap Index · All-versions archive
87.1#11
Measured · 82% support · score interval 87.1–93.9
Market Gravity
33.3
Secondary market signal

Superseded by GPT-5.3 Chat. It no longer holds a current-board position; its all-versions archive rank is #11.

Input
$1.75
per 1M tokens
Output
$14.00
per 1M tokens
Context
128K
tokens
Providers
2
endpoints
Gateway spend
latest · Vercel share

Providers

Uptime measured over the last 30 minutes
ProviderInputOutputContextQuantUptime
OpenAICheapest$1.75$14.00128K100.0%
Azure$1.75$14.00128K

Other versions (1)

ModelCap Index · All-versions archive

Methodology
87.1
Measured · 2 public benchmark observations across 2 boards
All-versions archive
#11
Public rank basis
Measured (measured)
Index support
82.1% · strong
Index interval
87.1–93.9
Rank posterior
Not available
Top 5 / Top 10 probability
Not available / Not available
Posterior as of
Snapshot timestamp unavailable
Identity binding
Exact catalogue product · openai/openai/gpt-5.2-chat · aggregates disclosed benchmark configurations · endpoint configuration not claimed
Direct benchmark observations
2
Breadth-adjusted BES point estimate
90.5
Bayesian Evidence Score · measured evidence input only

BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.

Observed capability
90.5
Evidence status
confirmed · 83% mass
General preference
90.9
Coding
89.3
Agents & tools
Reasoning
Evidence breadth
92%
Evidence coverage
82%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
8.7
Liquidity (providers × uptime)
76.2
Open reach (HF downloads)
Surface (context / tools / modalities)
60.0
Freshness
40.1
  • · OpenRouter popularity #182
  • · 2 live providers
  • · Catalogue: context 128000, tools, modalities File/Image/Text
  • · First seen 2025-12-10

These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.

BES evidence selected · measured input only

The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.

Deployment readiness

Metadata index
43.7
limited · 56% metadata coverage
Not capability
Artifact reproducibility
0.0
Access & legal clarity
30.3
Deployability
90.0
Evaluation provenance
53.2

Missing: artifactReproducibility.revision-sha, artifactReproducibility.architecture-and-model-type, artifactReproducibility.parameter-count, artifactReproducibility.serialized-weight-format, artifactReproducibility.base-lineage, accessLegalClarity.declared-license, accessLegalClarity.resolvable-license-terms, evaluationProvenance.evaluation-dataset-revisions.

A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.

Market activity

Venue coverage
Market Gravity
33.3
OpenRouter weekly popularity
#182 of 298

Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.

Arena preference

Status
Ranked
Source
Arena
Official rank
#22 of 385
Rating
1476.1
95% confidence interval
1472–1480
Votes
34K
Source snapshot
6 Aug 2026, 13:00 UTC
Category
overall
Identity match confidence
98%

Market Gravity breakdown

Usage55%
8.7

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
76.2

Independent providers versus the model's open or closed cohort, weighted by uptime.

Open reach15%
50.0

Hugging Face 30-day downloads for open models; neutral for closed models.

Freshness5%
40.1

Time since first public availability, on a six-month half-life.

Specification

Context window
128K tokens
Max output
16K tokens
Inputs
File, Image, Text
Outputs
Text
Tokenizer
GPT
Cached input tokens
$0.175 / 1M
First seen on OpenRouter
10 Dec 2025

Capabilities

  • Not supported: Reasoning
  • Supported: Tool use
  • Supported: Structured output
  • Supported: Response format
  • Supported: Moderated