Where is the GPT-6.1 Sol documentation?

The GPT-6.1 Sol documentation on OpenRouter includes the Reranking in RAG: How to Fix Bad Retrieval with a Reranker blog post and the How to Benchmark LLMs blog post. The quickstart covers API keys and your first request, and the API reference lists every parameter.

How much does GPT-6.1 Sol cost?

GPT-6.1 Sol costs $2.00/M input tokens and $10.00/M output tokens, with separate rates for Cache Read at $0.10/M tokens and Cache Write at $2.50/M tokens.

What is the context length of GPT-6.1 Sol?

GPT-6.1 Sol has a 1,050,000 token context window. It supports up to 128,000 completion tokens.

Does GPT-6.1 Sol support tool calling and structured outputs?

Yes. GPT-6.1 Sol accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

Can I disable prompt caching for GPT-6.1 Sol?

Yes. OpenAI caches prompts of 1024 tokens or more automatically, and GPT-6.1 Sol bills a cache write on each cached prompt whether or not the cached prefix is read again. To turn caching off for a request, set prompt_cache_options.mode to "explicit" at the request root and do not mark any content block with prompt_cache_breakpoint. Explicit mode disables OpenAI-managed breakpoints, so a request with none of your own has no cacheable prefix and is billed at the plain input rate. See the prompt caching guide.

What inputs and outputs does GPT-6.1 Sol support?

GPT-6.1 Sol accepts files such as PDFs, images, and text as input and returns text.

Which providers serve GPT-6.1 Sol?

GPT-6.1 Sol is served by 3 providers on OpenRouter: OpenAI, Amazon Bedrock, and Azure. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

When was GPT-6.1 Sol released?

GPT-6.1 Sol was released on September 29, 2026.

OpenAI: GPT-6.1 Sol

openai/gpt-6.1-sol

Compare

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional work, and multi-step business workflow automation, and approaches Astra-level results on these tasks at a much lower cost. Compared with GPT-6 Sol, it makes fewer factual errors and is more reliable at respecting explicit restrictions and user intent during agentic tasks.

Modalities

In / out price

$2 / $10per 1M

Context

1.1M

Released

Sep 29, 2026

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick: Balanced (price + speed), Nitro (fastest), or Floor (cheapest).

Latency / throughput


	$2.00	$10.00	$0.10	4.92s	47 tok/s	100.00%
	$2.00	$10.00	$0.10	2.43s	41 tok/s	100.00%
	$2.00	$10.00	$0.10	4.41s	37 tok/s	68.49%
Not used in Standard routing:Why these endpoints are not used
Flex	$1.00	$5.00	$0.05	7.10s	42 tok/s	100.00%
	$2.20	$11.00	$0.11	5.33s	35 tok/s	100.00%
	$2.20	$11.00	$0.11	5.11s	31 tok/s	100.00%
	$2.20	$11.00	$0.11	4.13s	38 tok/s	100.00%
Fast	$4.00	$20.00	$0.20	2.56s	60 tok/s	100.00%
Ultrafast	$12.00	$60.00	$0.60	1.76s	78 tok/s	100.00%

Input $2.00Output $10.00
47 tok/s100.00% uptime
Input $2.00Output $10.00
41 tok/s100.00% uptime
Input $2.00Output $10.00
37 tok/s68.49% uptime
Not used in Standard routing:Why these endpoints are not used
Input $1.00Output $5.00
Flex
42 tok/s100.00% uptime
Input $2.20Output $11.00
35 tok/s100.00% uptime
Input $2.20Output $11.00
31 tok/s100.00% uptime
Input $2.20Output $11.00
38 tok/s100.00% uptime
Input $4.00Output $20.00
Fast
60 tok/s100.00% uptime
Input $12.00Output $60.00
Ultrafast
78 tok/s100.00% uptime

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Weighted average

Input

$0.40/M tokens

Output

$9.885/M tokens

GPT-6.1 Sol — Price history

Price history

No effective price data for this selection

		$0.354	$10.07	90.2%	2.3%
		$0.371	$10.10	89.8%	67.1%
		$0.657	$10.06	80.7%	16.3%
Not used in Standard routing:Why these endpoints are not used
	Flex	$0.127	$5.03	93.8%	10.6%
		$0.434	$11.02	87.9%	1.2%
		$0.483	$12.07	88.5%	1.4%
		$0.518	$11.11	84.6%	0.0%
	Fast	$1.011	$20.50	84.6%	1.0%
	Ultrafast	$2.220	$60.52	89.1%	0.1%

Effective in $0.354Effective out $10.07
Token share
2.3%
Effective in $0.371Effective out $10.10
Token share
67.1%
Effective in $0.657Effective out $10.06
Token share
16.3%
Not used in Standard routing:Why these endpoints are not used
Effective in $0.127Effective out $5.03
FlexToken share
10.6%
Effective in $0.434Effective out $11.02
Token share
1.2%
Effective in $0.483Effective out $12.07
Token share
1.4%
Effective in $0.518Effective out $11.11
Token share
0.0%
Effective in $1.011Effective out $20.50
FastToken share
1.0%
Effective in $2.220Effective out $60.52
UltrafastToken share
0.1%

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)

99.99%

Availability (3d)

90.14%

Availability over the last 3 days

Last 72 hours

Availability 90.14%

3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability

98.12%

Without Routing

96.20%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for OpenAI: GPT-6.1 Sol (Artificial Analysis, Design Arena and Vals AI)
Source	Benchmark	Score
Artificial Analysis	GPT-6.1 Sol (Max) Intelligence Index	54.6
Artificial Analysis	GPT-6.1 Sol (Max) HLE	52.9%
Artificial Analysis	GPT-6.1 Sol (Max) AA-LCR	83.0%
Artificial Analysis	GPT-6.1 Sol (Max) GDPval-AA	55.4%
Artificial Analysis	GPT-6.1 Sol (Max) CritPt	31.7%
Artificial Analysis	GPT-6.1 Sol (Max) SciCode	54.2%
Artificial Analysis	GPT-6.1 Sol (Max) Terminal-Bench 4.0	56.1%
Artificial Analysis	GPT-6.1 Sol (Max) AA-Omniscience Accuracy	61.8%
Artificial Analysis	GPT-6.1 Sol (Max) AA-Omniscience Non-Hallucination Rate	48.1%
Artificial Analysis	GPT-6.1 Sol (Medium) Intelligence Index	46.3
Artificial Analysis	GPT-6.1 Sol (Medium) HLE	49.9%
Artificial Analysis	GPT-6.1 Sol (Medium) AA-LCR	83.3%
Artificial Analysis	GPT-6.1 Sol (Medium) GDPval-AA	48.0%
Artificial Analysis	GPT-6.1 Sol (Medium) CritPt	27.7%
Artificial Analysis	GPT-6.1 Sol (Medium) SciCode	53.2%
Artificial Analysis	GPT-6.1 Sol (Medium) Terminal-Bench 4.0	48.0%
Artificial Analysis	GPT-6.1 Sol (Medium) AA-Omniscience Accuracy	59.6%
Artificial Analysis	GPT-6.1 Sol (Medium) AA-Omniscience Non-Hallucination Rate	51.9%
Artificial Analysis	GPT-6.1 Sol (Xhigh) Intelligence Index	52.5
Artificial Analysis	GPT-6.1 Sol (Xhigh) HLE	52.6%
Artificial Analysis	GPT-6.1 Sol (Xhigh) AA-LCR	79.7%
Artificial Analysis	GPT-6.1 Sol (Xhigh) GDPval-AA	52.7%
Artificial Analysis	GPT-6.1 Sol (Xhigh) CritPt	31.7%
Artificial Analysis	GPT-6.1 Sol (Xhigh) SciCode	55.7%
Artificial Analysis	GPT-6.1 Sol (Xhigh) Terminal-Bench 4.0	54.0%
Artificial Analysis	GPT-6.1 Sol (Xhigh) AA-Omniscience Accuracy	61.1%
Artificial Analysis	GPT-6.1 Sol (Xhigh) AA-Omniscience Non-Hallucination Rate	52.0%
Artificial Analysis	GPT-6.1 Sol (High) Intelligence Index	50.3
Artificial Analysis	GPT-6.1 Sol (High) HLE	51.4%
Artificial Analysis	GPT-6.1 Sol (High) AA-LCR	82.3%
Artificial Analysis	GPT-6.1 Sol (High) GDPval-AA	51.0%
Artificial Analysis	GPT-6.1 Sol (High) CritPt	30.0%
Artificial Analysis	GPT-6.1 Sol (High) SciCode	55.8%
Artificial Analysis	GPT-6.1 Sol (High) Terminal-Bench 4.0	51.5%
Artificial Analysis	GPT-6.1 Sol (High) AA-Omniscience Accuracy	60.4%
Artificial Analysis	GPT-6.1 Sol (High) AA-Omniscience Non-Hallucination Rate	51.0%
Artificial Analysis	GPT-6.1 Sol (Low) Intelligence Index	34.8
Artificial Analysis	GPT-6.1 Sol (Low) HLE	47.4%
Artificial Analysis	GPT-6.1 Sol (Low) AA-LCR	84.0%
Artificial Analysis	GPT-6.1 Sol (Low) GDPval-AA	41.1%
Artificial Analysis	GPT-6.1 Sol (Low) CritPt	24.9%
Artificial Analysis	GPT-6.1 Sol (Low) SciCode	53.2%
Artificial Analysis	GPT-6.1 Sol (Low) Terminal-Bench 4.0	30.8%
Artificial Analysis	GPT-6.1 Sol (Low) AA-Omniscience Accuracy	58.6%
Artificial Analysis	GPT-6.1 Sol (Low) AA-Omniscience Non-Hallucination Rate	50.1%
Design Arena	GPT-6.1 Sol Agents Arena Androidnative Elo	1197
Design Arena	GPT-6.1 Sol Agents Arena Blender3d Elo	1275
Design Arena	GPT-6.1 Sol Agents Arena Codetovideo Elo	1190
Design Arena	GPT-6.1 Sol Agents Arena Mobile Apps Elo	1231
Design Arena	GPT-6.1 Sol Agents Arena Pdf Elo	1137
Design Arena	GPT-6.1 Sol Agents Arena Spreadsheet Elo	1284
Design Arena	GPT-6.1 Sol Agents Arena Webapps Elo	1265
Design Arena	GPT-6.1 Sol Models Arena 3D Elo	1425
Design Arena	GPT-6.1 Sol Models Arena Code Categories Elo	1360
Design Arena	GPT-6.1 Sol Models Arena Data Visualization Elo	1273
Design Arena	GPT-6.1 Sol Models Arena Game Development Elo	1407
Design Arena	GPT-6.1 Sol Models Arena UI Component Elo	1358
Design Arena	GPT-6.1 Sol Models Arena Website Elo	1315
Vals AI	GPT-6.1 Sol Access to Justice Benchmark	65.8%
Vals AI	GPT-6.1 Sol BioMysteryBench	79.6%
Vals AI	GPT-6.1 Sol ClaimBench	100.0%
Vals AI	GPT-6.1 Sol Code Migration v1.1	77.3%
Vals AI	GPT-6.1 Sol CyberBench v1.1	39.3%
Vals AI	GPT-6.1 Sol EMB v1.1	71.1%
Vals AI	GPT-6.1 Sol Finance Agent v2.1	61.8%
Vals AI	GPT-6.1 Sol Vals Finance Index	55.8%
Vals AI	GPT-6.1 Sol Financial Coaching Bench	68.5%
Vals AI	GPT-6.1 Sol HLAB-Vals-1.1	6.3%
Vals AI	GPT-6.1 Sol Immigration	67.8%
Vals AI	GPT-6.1 Sol IOI	96.9%
Vals AI	GPT-6.1 Sol Vals Legal Index	68.7%
Vals AI	GPT-6.1 Sol Legal Research Bench	38.5%
Vals AI	GPT-6.1 Sol MedCode	48.8%
Vals AI	GPT-6.1 Sol MedScribe	86.5%
Vals AI	GPT-6.1 Sol MysteryMechanism	46.4%
Vals AI	GPT-6.1 Sol ProgramBench	3.0%
Vals AI	GPT-6.1 Sol ProofBench v1.1	99.0%
Vals AI	GPT-6.1 Sol Public Benefits Bench v1.1	59.3%
Vals AI	GPT-6.1 Sol Robo-bench	28.3%
Vals AI	GPT-6.1 Sol Vals RSI Index	26.6%
Vals AI	GPT-6.1 Sol SAGE	90.5%
Vals AI	GPT-6.1 Sol Vals Science Index	59.6%
Vals AI	GPT-6.1 Sol SRE Bench	50.8%
Vals AI	GPT-6.1 Sol SWE-bench Multimodal	43.5%
Vals AI	GPT-6.1 Sol Tax Agent Bench	21.8%
Vals AI	GPT-6.1 Sol Terminal-Bench 4.0	55.1%
Vals AI	GPT-6.1 Sol Terminal-Bench-Science	52.9%
Vals AI	GPT-6.1 Sol Vals Index	63.9%
Vals AI	GPT-6.1 Sol Vibe Code Bench v1.1	88.9%

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Codex

A coding agent that helps you build and ship with AI

3.36Ttokens

Hermes Agent

Hermes Agent is an open-source, self-improving AI agent by Nous Research that runs persistently with memory across sessions, and builds reusable skills from experience. It comes with 40+ built-in tools, including web search, browser automation, and vision, plus scheduled automations and subagents.

498Btokens

There are many coding agents, but this one is yours.

366Btokens

Descript

AI Video & Podcast Editor

273Btokens

omp

new

272Btokens

Rest of OpenRouter

314B

Top 5 Apps

143B

OpenAI: GPT Sol versions

Available through EU in-region routing

OpenAI: GPT-6.1 Sol is available through EU in-region routing. Requests sent to eu.openrouter.ai are decrypted in the EU and routed only to shared provider endpoints in Europe (the EU/EEA, the UK, and Switzerland).

Providers in Europe

Azure

Prices in Europe

Azure: $2.20/M tokens input, $11/M tokens output

Base URL

https://eu.openrouter.ai/api/v1

Plan

Requires Business or Enterprise. Self-serve on Business: no contract, no monthly minimum. OpenRouter Business for EU in-region routing

Fails closed: if no shared provider endpoint in Europe is available, the request errors instead of leaving the region. Requests served by your own BYOK key go to your deployment’s region, which you control. In-region routing docs

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OpenAI: GPT-6.1 Sol

Providers