Overview
This model always redirects to the latest model in the OpenAI GPT Luna family.
Our take
For developers building complex applications that require extensive contextual understanding, OpenAI GPT Luna Latest offers a compelling option. Its 1,050,000-token context window, larger than many listed alternatives, facilitates sophisticated tasks such as analysing substantial codebases or lengthy technical documentation. Unlike general-purpose chatbots like ChatGPT or Gemini, its emphasis on structured (JSON) outputs and tool/function calling capabilities positions it for agent-style workflows, where precise data exchange and external interaction are paramount. The inclusion of vision (image input) further extends its utility beyond text-only models, allowing for multimodal processing. This model is ideal for engineers and researchers who need a robust, reasoning-capable AI with a substantial working memory and the ability to integrate with other systems. However, as there is no free tier, its use is best reserved for those with a clear application and budget for per-token billing.
How OpenAI GPT Luna Latest stacks up
Among the 383 chatbots & llms tools in our directory, it ranks #3 of 369 on quality (9.2/10), 15% above the 369-tool average of 8.0, and its $0.2/1M input-token rate is in the budget end — 88% cheaper than the 359-model average of $1.70/1M.
Weighing quality against cost, OpenAI GPT Luna Latest's cost-per-quality-point of $0.02 places it in the top 27% for value among chatbots & llms tools.
OpenAI GPT Luna Latest in depth
OpenAI GPT Luna Latest, built by ~openai, sits in the chatbots & llms space and is a paid tool starting at $0.20/1M 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 Luna Latest 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 no free tier — usage is billed per token. Keep both in mind when deciding whether it fits your workflow.
OpenAI GPT Luna Latest 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
- ✓Knowledge cutoff 2026-02-16
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
- −No free tier — usage is billed per token
Who should use OpenAI GPT Luna Latest
- →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 no free tier — usage is billed per token is a dealbreaker.
Best for
10 Best OpenAI GPT Luna Latest Alternatives in 2026
OpenAI GPT Luna Latest 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 Luna Latest, 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
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~openai
This model always redirects to the latest model in the OpenAI GPT Sol family.
~openai
This model always redirects to the latest model in the OpenAI GPT Terra family.
Sakana AI
Fugu Ultra v2 is the higher-performance model in Sakana AI's Fugu family.
Sakana AI
Fugu Max is the cost-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a…
DeepSeek
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal…
OpenAI
GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software…
OpenAI GPT Luna Latest vs top alternatives
A side-by-side look at how OpenAI GPT Luna Latest stacks up against its closest rivals.
| Feature | OpenAI GPT Luna Latest~openai | ClaudeAnthropic | ChatGPTOpenAI | GeminiGoogle DeepMind |
|---|---|---|---|---|
| Quality score | 9.2 / 10 | 9.6 / 10 | 9.5 / 10 | 9.2 / 10 |
| Starting price | $0.20/1M 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 | $0.2 / 1M tokens | $5 / 1M tokens | $5 / 1M tokens | $0.375 / 1M tokens |
| API output price | $1.2 / 1M tokens | $25 / 1M tokens | $25 / 1M tokens | $1.875 / 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 Luna Latest free?
No — OpenAI GPT Luna Latest is a paid tool, starting at $0.20/1M tokens.
Q. How much does OpenAI GPT Luna Latest cost?
OpenAI GPT Luna Latest starts at $0.20/1M tokens. API usage is around $0.2 per 1M input tokens and $1.2 per 1M output tokens.
Q. What is OpenAI GPT Luna Latest best for?
OpenAI GPT Luna Latest is best suited to research and writing, within the chatbots & llms category.
Q. What are the best OpenAI GPT Luna Latest alternatives?
Popular alternatives to OpenAI GPT Luna Latest include Claude, ChatGPT, Gemini and OpenAI GPT Astra Latest. Each trades off price, quality and ecosystem differently.
Q. Is there a free alternative to OpenAI GPT Luna Latest?
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 Luna Latest?
Common reasons include pricing, specific feature gaps (No free tier — usage is billed per token), 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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