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ModelCap

GPT-5 Mini

Arena #180No linked weights

OpenAI·#221 of 504 in the all-versions archive

GPT-5 Mini is a language model from OpenAI. It ranks #221 of 504 in ModelCap's all-versions archive, with an Index score of 48.9, measured on 3 public benchmarks. Its score range of 44.1–53.7 spans positions #179–#243. It is listed at $0.25 per million input tokens and $2.00 per million output tokens across 2 providers. It reads up to 400K tokens of context, with no downloadable weights linked in the current source data.

Figures as of 6 Nov 2026, 13:52 UTC · download the public dataset · methodology

ModelCap Index · All-versions archive
48.9#221
Measured on 3 public benchmarks · range 44.1–53.7
Evidence as of 4 Nov 2026, 23:07 UTC
Market Gravity
46.0Decreased by 0.1
Secondary market signal

Superseded by GPT-5.4 Mini. It no longer holds a current-board position; its all-versions archive rank is #221.

Input
$0.25
per 1M tokens
Output
$2.00
per 1M tokens
Context
400K
tokens
Providers
2
4 endpoints

Providers

Uptime measured over the last 30 minutes
ProviderInputOutputContextQuantUptime
OpenAIflexCheapest$0.125$1.00400K—100.0%
Azure$0.25$2.00400K—100.0%
OpenAI$0.25$2.00400K—100.0%
Azureswedencentral$0.275$2.20400K—100.0%

Reasoning efforts

Best supported result can inform ModelCap

Published Max, X-High, High and other configurations for this model. These are sourced scores, not head-to-head essays.

Related community configurations

Human preference rating
ConfigurationRatingSource rankVotesSource
High
GPT-5 mini (High)
1390
CI 1385–1394
#18027KLMArena
Match 100%

Other versions (2)

ModelCap Index · All-versions archive

Methodology
48.9
Measured on 3 public benchmarks
All-versions archive
#221 of 504
Score range
44.1–53.7
Rank range
#179–#243
Evidence as of
4 Nov 2026, 23:07 UTC
Benchmarks used
ARC-AGI-2 Verified, Arena Coding, Arena Overall
Technical details
Public rank basis
Measured (measured)
Evidence label
Measured · 3 public benchmark observations across 3 boards
Index support
65.2% · strong
Identity binding
Exact catalogue product · openai/openai/gpt-5-mini · aggregates disclosed benchmark configurations · endpoint configuration not claimed
Index observations used
3
Qualified Index evidence point
48.9
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
48.9
Evidence status
confirmed · 87% mass
General preference
49.8
Coding
48.3
Agents & tools
—
Reasoning
16.6
Evidence breadth
95%
Evidence coverage
65%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
23.7
Liquidity (providers × uptime)
98.1
Open reach (HF downloads)
—
Surface (context / tools / modalities)
93.3
Freshness
17.6
  • · OpenRouter popularity #85
  • · 2 live providers
  • · Catalogue: context 400000, reasoning, tools, modalities Text/Image/File
  • · First seen 2025-08-07

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
48.3
partial · 56% metadata coverage
Not capability
Artifact reproducibility
0.0
Access & legal clarity
30.3
Deployability
90.0
Evaluation provenance
76.4

Not yet published: a pinned repository revision, the architecture and model type, a parameter count, safetensors weight metadata, the base model it derives from, a declared licence, a link to the licence terms, pinned evaluation dataset versions.

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

Market activity

Venue coverage
Market Gravity
46.0
OpenRouter weekly popularity
#85 of 339

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
LMArena
Official rank
#180 of 419
Rating
1389.8
95% confidence interval
1385–1394
Votes
27K
Source published at
28 Oct 2026, 00:00 UTC
Category
overall
Identity match confidence
100%

Market Gravity breakdown

Usage55%
23.7

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
98.1

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%
17.6

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

Specification

Model ID
openai/gpt-5-mini
Context window
400K tokens
Declared output cap
128K tokens

OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. OpenRouter metadata

Inputs
Text, Image, File
Outputs
Text
Tokenizer
GPT
Cached input tokens
$0.025 / 1M
First seen on OpenRouter
7 Aug 2025
Knowledge cutoff
2024-05-31

Capabilities

  • Supported: Reasoning
  • Supported: Tool use
  • Supported: Structured output
  • Supported: Response format
  • Supported: Moderated

Benchmark leaderboards featuring GPT-5 Mini

All leaderboards
Public benchmark boards on which GPT-5 Mini has a published result
LeaderboardScoreSource rankConfigurationPublished
Arena text leaderboardArena (LMArena)13901385–1394#180 of 419High28 Oct 2026
Arena coding leaderboardArena (LMArena)14321423–1440#188 of 414High28 Oct 2026
ARC-AGI-2 leaderboardARC Prize Foundation4.4%#191 of 280High4 Nov 2026

GPT-5 Mini: common questions

How does GPT-5 Mini rank among AI models?

GPT-5 Mini is a superseded version and is not on the current board as of 6 November 2026. Its archive position, where one exists, is shown on the page; the newer version carries the current rank.

How much does GPT-5 Mini cost per 1M tokens?

GPT-5 Mini is listed at $0.25 per 1M input tokens and $2.00 per 1M output tokens as of 6 November 2026; the lowest output price among 2 providers is $1.00 on OpenAI. Prices come from the OpenRouter catalogue and re-observe on every refresh. For 1,000 requests using 2,000 input and 500 output tokens each, the listed rates imply $1.50 total (2M input + 0.5M output). This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the chosen endpoint's rate and limits before budgeting.

What is the context window of GPT-5 Mini?

GPT-5 Mini has a published context window of 400K tokens (400,000). The snapshot lists a 128,000 token catalogue-declared route output cap. OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. The providers table lists each endpoint's context limit.

Is GPT-5 Mini open-weight?

No linked weights. No downloadable model weights are linked in the current source data. This does not identify every API or chat product that offers the model.

Which API providers serve GPT-5 Mini?

2 providers serve GPT-5 Mini through OpenRouter as of 6 November 2026: OpenAI and Azure. Each provider's price, context limit, quantization and measured uptime are in the providers table above.

Which benchmarks has GPT-5 Mini been evaluated on?

GPT-5 Mini has published results on 3 public boards tracked by ModelCap as of 6 November 2026: Arena text 1390 (#180 of 419), Arena coding 1432 (#188 of 414) and ARC-AGI-2 4.4% (#191 of 280). Each board page ranks every tracked model on that benchmark. The ModelCap Index scores the results its methodology admits, with published uncertainty, and shows reference boards without scoring them.

When was GPT-5 Mini released?

GPT-5 Mini first appeared in the catalogue on 7 Aug 2025, with a published knowledge cutoff of 2024-05-31. It has since been superseded by GPT-5.4 Mini. Rank and price movements since then are recorded on the site's changes feed.