Overview
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...
Our take
As an AI chatbot and assistant, OpenAI's GPT-6.1 Sol positions itself as a capable option for tasks requiring substantial context and structured interactions. With its 1,050,000-token context window, it accommodates extensive document analysis, such as reviewing lengthy research papers or legal documents. Unlike some alternatives that might focus purely on conversational fluency, GPT-6.1 Sol includes built-in reasoning (chain-of-thought) and supports tool/function calling, making it suitable for agentic coding or automating complex computer-use workflows. It also accepts image inputs, broadening its utility beyond text-only models. Ideal for developers and professionals who need to process large volumes of information, integrate AI into applications via structured JSON outputs, or automate tasks requiring vision capabilities, its above-average API pricing of $2 per 1M input tokens suggests it is aimed at users with specific, demanding use cases. Those seeking a free or lower-cost general-purpose chatbot may find other options more appropriate.
How OpenAI: GPT-6.1 Sol stacks up
Among the 378 chatbots & llms tools in our directory, it ranks #3 of 373 on quality (9.2/10), 15% above the 373-tool average of 8.0, and its $2/1M input-token rate is in the premium end — 3% pricier than the 362-model average of $1.94/1M.
Weighing quality against cost, OpenAI: GPT-6.1 Sol's cost-per-quality-point of $0.22 places it at #272 of 353 for value among chatbots & llms tools.
OpenAI: GPT-6.1 Sol in depth
OpenAI: GPT-6.1 Sol, built by OpenAI, sits in the chatbots & llms space and is a paid tool starting at $2.00/1M tokens. Our editors rate it 9.2 out of 10 based on capability, ecosystem and value. It handles a context window of 1,050,000 tokens.
On the feature side, OpenAI: GPT-6.1 Sol brings 1,050,000-token context window, vision (image input), reasoning / chain-of-thought and tool / function calling. These are the capabilities that most shape day-to-day use and separate it from thinner alternatives.
Its biggest strength is large 1,050,000-token context window, bigger than most models listed here, while the main trade-off to weigh is that above-average api pricing ($2 per 1m input tokens). Keep both in mind when deciding whether it fits your workflow.
OpenAI: GPT-6.1 Sol is most often chosen for research and writing. If that matches your goals, it's a strong candidate to shortlist.
Key features
- ✓1,050,000-token context window
- ✓Vision (image input)
- ✓Reasoning / chain-of-thought
- ✓Tool / function calling
- ✓Structured (JSON) outputs
Pricing
Pros
- +Large 1,050,000-token context window, bigger than most models listed here
- +Built-in reasoning (chain-of-thought) mode for harder problems
- +Accepts images as input (vision-capable)
- +Supports tool / function calling for agent-style workflows
Cons
- −Above-average API pricing ($2 per 1M input tokens)
Who should use OpenAI: GPT-6.1 Sol
- →Anyone looking for a chatbots & llms tool from OpenAI.
- →Teams and individuals focused on research and writing.
- →People who value large 1,050,000-token context window, bigger than most models listed here.
- →Workflows that need a 1,050,000 tokens context window.
Who should look elsewhere
- →Anyone who needs a free tier — this tool is paid only.
- →Those for whom above-average api pricing ($2 per 1m input tokens) is a dealbreaker.
Best for
10 Best OpenAI: GPT-6.1 Sol Alternatives in 2026
OpenAI: GPT-6.1 Sol is a strong chatbots & llms tool, but it is not the only option. Whether you are after a lower price, different features or a better fit for your workflow, here are the 10 best alternatives to OpenAI: GPT-6.1 Sol, ranked and compared.
Anthropic
Claude is Anthropic's family of AI assistants, known for long-context reasoning, careful writing and strong coding…
OpenAI
ChatGPT is OpenAI's flagship conversational AI, powering hundreds of millions of weekly users across web, mobile and…
Google DeepMind
Gemini is Google's natively multimodal model family, deeply integrated across Search, Workspace, Android and the Pixel…
OpenAI
GPT-6.1 Sol Pro is the same underlying model as [GPT-6.1 Sol](https://openrouter.ai/openai/gpt-6.1-sol), served with…
Anthropic
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a…
Fireworks
Ember-1 is a specialized reasoning model from Fireworks Research, built on [Kimi…
Qwen
Qwen3.8 Max Prime is a higher-throughput variant of Qwen3.8 Max from Alibaba's Qwen team, served as a separate SKU at a…
Stealth
Space Bunny Alpha is an anonymous large model with blazing-fast inference, strong coding capabilities and native…
OpenAI
GPT-6 Luna Pro is the same underlying model as [GPT-6 Luna](https://openrouter.ai/openai/gpt-6-luna), served with…
OpenAI
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol.
OpenAI: GPT-6.1 Sol vs top alternatives
A side-by-side look at how OpenAI: GPT-6.1 Sol stacks up against its closest rivals.
| Feature | OpenAI: GPT-6.1 SolOpenAI | ClaudeAnthropic | ChatGPTOpenAI | GeminiGoogle DeepMind |
|---|---|---|---|---|
| Quality score | 9.2 / 10 | 9.6 / 10 | 9.5 / 10 | 9.2 / 10 |
| Starting price | $2.00/1M tokens | $20/mo | $20/mo | $20/mo |
| Free tier | No | Yes — Free tier available | Yes — Free tier available | Yes — Free tier available |
| API input price | $2 / 1M tokens | $2 / 1M tokens | $2 / 1M tokens | $0.75 / 1M tokens |
| API output price | $10 / 1M tokens | $10 / 1M tokens | $10 / 1M tokens | $3.75 / 1M tokens |
| Speed | — | Fast | Fast | Fast |
| Context window | 1,050,000 tokens | 200K tokens | 128K tokens | 1M-2M tokens |
| Categories | Chatbots & LLMs | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing |
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Frequently asked questions
Q. Is OpenAI: GPT-6.1 Sol free?
No — OpenAI: GPT-6.1 Sol is a paid tool, starting at $2.00/1M tokens.
Q. How much does OpenAI: GPT-6.1 Sol cost?
OpenAI: GPT-6.1 Sol starts at $2.00/1M tokens. API usage is around $2 per 1M input tokens and $10 per 1M output tokens.
Q. What is OpenAI: GPT-6.1 Sol best for?
OpenAI: GPT-6.1 Sol is best suited to research and writing, within the chatbots & llms category.
Q. What are the best OpenAI: GPT-6.1 Sol alternatives?
Popular alternatives to OpenAI: GPT-6.1 Sol include Claude, ChatGPT, Gemini and OpenAI: GPT-6.1 Sol Pro. Each trades off price, quality and ecosystem differently.
Q. Is there a free alternative to OpenAI: GPT-6.1 Sol?
Yes. Claude, ChatGPT, Gemini offer a free tier, making them good starting points if you want to avoid an upfront subscription.
Q. Why switch from OpenAI: GPT-6.1 Sol?
Common reasons include pricing, specific feature gaps (Above-average API pricing ($2 per 1M input tokens)), data-privacy requirements, or simply wanting a tool that fits your stack better.
How we rate AI tools
Our quality score weighs capability on real tasks, breadth of features and integrations, pricing and value, and how actively the tool is maintained. Scores are editorial guidance, not benchmarks — always trial a tool on your own workflow before committing. Pricing and features change frequently, so verify current details on the official site.
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