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ModelCap

GPT-5.6 Sol

Current board #51 Arena configurationsAPI only

OpenAI·openai/gpt-5.6-sol

GPT-5.6 Sol is a language model published by OpenAI. 6 OpenRouter endpoints are published in the latest snapshot. It accepts file, image, text input and returns text. The published context limit is 1.1M tokens. The catalogue declares support for reasoning, tool use, structured outputs.

ModelCap Index · Current board
88.4#5
Measured · 88% support · score interval 88.4–94.4
Market Gravity
58.7
Secondary market signal
Input
$5.00
per 1M tokens
Output
$30.00
per 1M tokens
Context
1.1M
tokens
Providers
6
endpoints
Gateway spend
4.12%
latest · Vercel share

Providers

Uptime measured over the last 30 minutes
ProviderInputOutputContextQuantUptime
OpenAIflexCheapest$2.50$15.001.1M—94.79%
OpenAI$5.00$30.001.1M—94.79%
Azure$5.00$30.001.1M—100.0%
Azureeu$5.50$33.001.1M——
Amazon Bedrockus-east-1$5.50$33.001.1M——
OpenAIpriority$10.00$60.001.1M—94.79%

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.

EffortAgent scoreSource rankSampleSource
X-High
GPT 5.6 Sol (xHigh)
10.09%
CI 8.4–11.8%
#51.5M obs
18K sessions
LMArena Agent
Match 100%

Related community configurations

Human preference rating
ConfigurationRatingSource rankVotesSource
X-High
gpt-5.6-sol-xhigh
1482
CI 1476–1488
#1813KArena
Match 100%

ModelCap Index · Current board

Methodology
88.4
Measured · 5 public benchmark observations across 5 boards
Current board
#5
Public rank basis
Measured (measured)
Index support
88.1% · strong
Index interval
88.4–94.4
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-5.6-sol · aggregates disclosed benchmark configurations · endpoint configuration not claimed
Direct benchmark observations
5
Breadth-adjusted BES point estimate
91.4
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
91.4
Evidence status
confirmed · 96% mass
General preference
91.7
Coding
92.1
Agents & tools
84.0
Reasoning
91.9
Evidence breadth
100%
Evidence coverage
88%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
46.6
Liquidity (providers × uptime)
84.6
Open reach (HF downloads)
—
Surface (context / tools / modalities)
100.0
Freshness
89.4
  • · OpenRouter popularity #21
  • · 3 live providers
  • · Catalogue: context 1050000, reasoning, tools, modalities File/Image/Text
  • · First seen 2026-07-09

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
53.6
partial · 56% metadata coverage
Not capability
Artifact reproducibility
0.0
Access & legal clarity
30.3
Deployability
99.5
Evaluation provenance
88.6

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
58.7
OpenRouter weekly popularity
#21 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

Configuration results available

Arena has published current community results for X-High. No default-configuration result is published, so the raw Arena field stays configuration-specific. The strongest supported result can still inform ModelCap Score with reduced confidence.

Current board through 6 Aug 2026, 13:00 UTC

Market Gravity breakdown

Usage55%
46.6

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
84.6

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%
89.4

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

Specification

Context window
1.1M tokens
Max output
128K tokens
Inputs
File, Image, Text
Outputs
Text
Tokenizer
GPT
Cached input tokens
$0.50 / 1M
First seen on OpenRouter
9 Jul 2026
Knowledge cutoff
2026-02-16

Capabilities

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