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ModelCap

o4 Mini

Arena #177No linked weights7d #126 → #136

OpenAI·#136 of 352 on the current board·cheaper than #113 Qwen3 235B A22B Thinking 2507

o4 Mini is a language model from OpenAI. It ranks #136 of 352 on ModelCap's current board, with an Index score of 49.0, measured on 3 public benchmarks. Its score range of 44.2–53.8 spans positions #104–#149. It is listed at $0.55 per million input tokens and $2.20 per million output tokens from one provider. It reads up to 200K 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 · Current board
49.0#136
Measured on 3 public benchmarks · range 44.2–53.8
Evidence as of 4 Nov 2026, 23:07 UTC
Market Gravity
16.7
Secondary market signal
Input
$0.55
per 1M tokens
Output
$2.20
per 1M tokens
Context
200K
tokens
Providers
1
endpoint

Providers

Uptime measured over the last 30 minutes
ProviderInputOutputContextQuantUptime
OpenAI$0.55$2.20200K——

Other versions (1)

ModelCap Index · Current board

Methodology
49.0
Measured on 3 public benchmarks
Current board
#136 of 352
Score range
44.2–53.8
Rank range
#104–#149
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
64.8% · strong
Identity binding
Exact catalogue product · openai/openai/o4-mini · aggregates disclosed benchmark configurations · endpoint configuration not claimed
Index observations used
3
Qualified Index evidence point
49.0
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
49.0
Evidence status
confirmed · 87% mass
General preference
49.9
Coding
48.7
Agents & tools
—
Reasoning
20.1
Evidence breadth
95%
Evidence coverage
65%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
0.1
Liquidity (providers × uptime)
34.4
Open reach (HF downloads)
—
Surface (context / tools / modalities)
88.3
Freshness
11.5
  • · OpenRouter popularity #338
  • · 1 live provider
  • · Catalogue: context 200000, reasoning, tools, modalities Image/Text/File
  • · First seen 2025-04-16

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
39.4
limited · 50% metadata coverage
Not capability
Artifact reproducibility
0.0
Access & legal clarity
30.3
Deployability
60.0
Evaluation provenance
76.7

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, measured provider uptime, 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
16.7
OpenRouter weekly popularity
#338 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
#177 of 419
Rating
1391.0
95% confidence interval
1387–1395
Votes
45K
Source published at
28 Oct 2026, 00:00 UTC
Category
overall
Identity match confidence
99%

Market Gravity breakdown

Usage55%
0.1

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
34.4

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%
11.5

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

Specification

Model ID
openai/o4-mini
Context window
200K tokens
Declared output cap
100K 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
Image, Text, File
Outputs
Text
Tokenizer
GPT
Cached input tokens
$0.138 / 1M
First seen on OpenRouter
16 Apr 2025
Knowledge cutoff
2024-06-30

Capabilities

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

Compare o4 Mini with

Pick any model

Benchmark leaderboards featuring o4 Mini

All leaderboards
Public benchmark boards on which o4 Mini has a published result
LeaderboardScoreSource rankConfigurationPublished
Arena text leaderboardArena (LMArena)13911387–1395#177 of 419Not reported28 Oct 2026
Arena coding leaderboardArena (LMArena)14331426–1440#182 of 414Default28 Oct 2026
ARC-AGI-2 leaderboardARC Prize Foundation6.1%#178 of 280High4 Nov 2026
SWE-bench leaderboardSWE-bench (Princeton / SWE-agent team)45.0%#36 of 47Default26 Jul 2025
BFCL V4 function-calling leaderboardUC Berkeley (Gorilla)53.2#18 of 83Function calling12 Apr 2026

Alternatives to o4 Mini, by the numbers

Ranked neighbours

Models within 3 places of #136 on the ModelCap Index.

Cheaper at a similar or higher Index

Index score within 3 points of, or above, this model's, with a lower listed blended price (3:1 input:output).

Other ranked OpenAI models

The same publisher's other current models with a public Index position.

o4 Mini: common questions

How does o4 Mini rank among AI models?

o4 Mini holds ModelCap Index position #136 of 352 ranked language models as of 6 November 2026, with an Index score of 49.0 (interval 44.2–53.8); evidence: measured. The Index combines public benchmark boards with published uncertainty; the methodology page explains the weighting.

How much does o4 Mini cost per 1M tokens?

o4 Mini is listed at $0.55 per 1M input tokens and $2.20 per 1M output tokens as of 6 November 2026. 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 $2.20 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 o4 Mini?

o4 Mini has a published context window of 200K tokens (200,000). The snapshot lists a 100,000 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 o4 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 o4 Mini?

One provider serves o4 Mini through OpenRouter as of 6 November 2026: OpenAI. Each provider's price, context limit, quantization and measured uptime are in the providers table above.

Which benchmarks has o4 Mini been evaluated on?

o4 Mini has published results on 5 public boards tracked by ModelCap as of 6 November 2026: Arena text 1391 (#177 of 419), Arena coding 1433 (#182 of 414), ARC-AGI-2 6.1% (#178 of 280), SWE-bench 45.0% (#36 of 47) and BFCL V4 53.2 (#18 of 83). 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.

How does o4 Mini compare with GPT-5.4 Nano?

o4 Mini ranks #136 (Index 49.0) and GPT-5.4 Nano ranks #112 (Index 52.8) on the ModelCap Index as of 6 November 2026. The head-to-head page lines up their benchmarks, listed prices, context windows and provider counts side by side.

When was o4 Mini released?

o4 Mini first appeared in the catalogue on 16 Apr 2025, with a published knowledge cutoff of 2024-06-30. It is the current version in its family. Rank and price movements since then are recorded on the site's changes feed.