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Scheduled for retirement on Jan 11, 2028. Still available at the prices below until then.

GPT-5.6 Sol

OpenAIReleased Jul 9, 2026KnowledgeFeb 2026
VisionTool useReasoningPrompt cachingStructured outputWeb search
Compare GPT-5.6 SolCount tokens for GPT-5.6 Sol
Context
1.1M
Max output
128K
Serving providers
6
Cheapest input
$2.00 /1M
On-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower. An OpenRouter routed quote is the price of whichever upstream provider OpenRouter prefers today, so it moves day to day.

Benchmarks

independent evaluations · source: ARC Prize and Artificial Analysis
Speed & latency
Output speed
94 t/s
tokens / second
Time to first token
138.40s
latency
Headline indices
Intelligence Index
47.0
of 100
Coding Index
78.3
of 100
Frozen Sep 9, 2026
Agentic Index
50.5
of 100
Frozen Sep 9, 2026
Individual benchmarks · click a row for effort variants
BenchmarkBest scoreEffortCost / task
Aa Analyst Agent0.5default—
ARC-AGI-293%max$1.44
Automation Bench0.6default—
CritPt32%default—
GDPval v2Frozen Aug 18, 20261723.0default—
GPQA Diamond94%default—
Harvey Lab0.9default—
Humanity's Last Exam49%default—
IFBench73%default—
IT-Bench SRE56%default—
Long-Context Reasoning84%default—
Mlcr OverallFrozen Sep 9, 20260.3default—
MMMU-Pro83%default—
Omniscience22.0default—
Omniscience Accuracy0.6default—
Omniscience Non Hallucination0.1low—
SciCode58%high—
Terminal Bench400.4default—
TerminalBench Hard66%default—
TerminalBench v2.190%xhigh—
τ-bench Banking44%default—
τ²-bench85%default—
Artificial Analysis last published scores for this benchmark on Sep 9, 2026. Scores here are frozen at that date, and models released since are not on it.
Artificial Analysis last published scores for this benchmark on Aug 18, 2026. Scores here are frozen at that date, and models released since are not on it.

Pricing detail

cost beyond the standard rate · source: models.dev
Long context (>200K)
$10.00 / $45.00
input / output · per 1M

Pricing by serving provider

standard tier · per 1M tokens · click a provider to expand

Input pricing runs from $2.00 to $4.00 per 1M tokens across 6 providers, so the dearest route costs 100% more than the cheapest for the same model.

Serving providerInput /1MOutput /1MEndpoints
OpenRouterRouted quote$2.00$10.001
Standardopenai/gpt-5.6-sol
ComponentUnitStandard
Text cached in/1M tok$0.20
Text input/1M tok$2.00
Text output/1M tok$10.00
Azure$4.00$20.001
Amazon Bedrock$4.00$20.001
OpenAI$4.00$20.001
VercelVercel reseller quote$4.00$20.001
Databricks$4.00$20.001
OpenRouter (batch)$1.00$5.001
Vercel (flex)Vercel reseller quote$2.00$10.001
Vercel is dearest at $8.00 / $40.00

Price history

listed seller prices, input and output per 1M tokens
Input Output
Input down 20% since first tracked
$0.00$10.00$20.00$30.00Jul 10Aug 23Aug 28Sep 17$20.00$4.00

Cost calculator

estimate your monthly spend on this model
$1,200
estimated / month

Model IDs

copy the exact identifier for your platform
openai/gpt-5.6-sol:batchopenai/gpt-5.6-solopenai/gpt-5.6-solglobal.openai.gpt-5.6-solgpt-5.6-solazure/gpt-5.6-solopenai/gpt-5.6-soldatabricks/databricks-gpt-5-6-solopenai/gpt-5.6-solopenai/gpt-5.6-sol-fastopenai/gpt-5.6-sol

Frequently asked questions

GPT-5.6 Sol pricing, context and availability

Is GPT-5.6 Sol still available?

Yes. GPT-5.6 Sol is scheduled for retirement on 2028-01-11.

How much does GPT-5.6 Sol cost?

GPT-5.6 Sol costs $2.00 per 1M input tokens as an OpenRouter routed quote, while OpenAI lists it at $4.00 per 1M input, and $10.00 per 1M output tokens as an OpenRouter routed quote, while OpenAI lists it at $20.00 per 1M output. An OpenRouter routed quote is the price of whichever upstream provider OpenRouter prefers today, so it moves day to day. Across 6 serving providers, input prices range from $2.00 to $4.00 per 1M tokens.

What is the context window of GPT-5.6 Sol?

GPT-5.6 Sol accepts up to 1.1M tokens of context and can return up to 128K output tokens.

Which providers serve GPT-5.6 Sol?

GPT-5.6 Sol is available from 6 serving providers, each with its own pricing and model ID. OpenRouter is currently the cheapest, as a routed quote.

What can GPT-5.6 Sol do?

GPT-5.6 Sol supports image input (vision), tool use, reasoning, prompt caching, structured output and web search.

Other OpenAI models

compare pricing across the OpenAI lineup
gpt-oss-120b$0.03/1M · 23 providersgpt-oss-20b$0.0145/1M · 15 providersGPT-5 Mini$0.25/1M · 9 providersGPT-5$1.25/1M · 9 providersGPT-5 Nano$0.05/1M · 8 providersGPT-5.6 Luna$0.20/1M · 7 providersGPT-5.6 Terra$2.00/1M · 7 providersGPT-4o-mini$0.15/1M · 6 providers

Popular comparisons

head-to-head pages featuring GPT-5.6 Sol
GPT-5.6 Sol vs Claude Fable 5.1side-by-side pricing & benchmarks GPT-5.6 Sol vs Claude Opus 5side-by-side pricing & benchmarks GPT-5.6 Sol vs DeepSeek V4.1 Flashside-by-side pricing & benchmarks GPT-5.6 Sol vs DeepSeek V4 Pro 0423side-by-side pricing & benchmarks GPT-5.6 Sol vs Gemini 3.7 Flashside-by-side pricing & benchmarks
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026

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