Quick answers and short drafts
Fast general models
Use these when speed matters more than deep reasoning, such as brainstorming, rewriting a sentence, or getting a first explanation.
AI Models
All the top AI models from leading providers, available in one place. No separate subscriptions needed.
How to read this page
This page is meant to help visitors understand the role of each model family before they sign up. Instead of only listing brand names, it explains where each provider tends to fit and how to choose a model based on the work you need to do.
Model availability changes over time
AI providers update model names, capabilities, prices, and rate limits. This page describes the model families currently exposed by Deni AI and the practical role each category plays in the product.
OpenAI
A broad mix of general-purpose, reasoning, and coding models. Useful when you want the widest range of task coverage in one family.
Useful when you want another high-capability option for multimodal and general productivity workflows inside the same workspace.
Anthropic
Often a strong choice for structured writing, analysis, and long-form reasoning where tone and coherence matter.
xAI
Helpful to compare against other providers when you want a different response style or model behavior for the same prompt.
OpenAI
GPT-5.6 Sol
2x
OpenAI flagship for complex reasoning, coding, and agentic work.
Context window: 1,050,000 · Long context (>200,000 input): 2× usage · Fast mode: 2× usage · Pro mode: 3× premium usage
smartestreasoningcodingfast
GPT-5.6 Terra
1.5x
Balanced GPT-5.6 model for everyday work at half the cost of Sol.
Context window: 1,050,000 · Long context (>200,000 input): 2× usage · Fast mode: 2× usage · Pro mode: 3× premium usage
reasoningsmartcodingfast
GPT-5.6 Luna
Fastest, most affordable GPT-5.6 model for high-volume tasks.
Context window: 1,050,000 · Long context (>200,000 input): 2× usage · Fast mode: 2× usage · Pro mode: 3× premium usage
reasoningfastfastest
GPT-5.5
1.5x
A new class of intelligence for coding and professional work.
Context window: 1,000,000 · Long context (>200,000 input): 2× usage
smartestreasoningcodingfast
GPT-5.4
A more affordable model for coding and professional work.
Context window: 1,000,000 · Long context (>200,000 input): 2× usage
reasoningsmartfast
GPT-5.4 mini
Our strongest mini model yet for coding, computer use, and subagents.
Context window: 400,000
codingreasoningfast
GPT-5.4 nano
Our cheapest GPT-5.4-class model for simple high-volume tasks.
Context window: 400,000
reasoningfastestfast
GPT-5.3 Codex
The most capable agentic coding model to date.
codingreasoningfast
GPT-5.2
General purpose OpenAI model
smartreasoningfast
GPT-5
Shutdown Dec 11, 2026
Flagship model for coding, reasoning, and agentic tasks across domains.
smartreasoningfast
GPT-5 mini
Shutdown Dec 11, 2026
Faster, more affordable GPT-5 for well-defined tasks.
reasoningfast
GPT-5 nano
Shutdown Dec 11, 2026
Fastest, most cost-efficient GPT-5 model.
reasoningfast
GPT-4.1
Smartest model for fast, everyday tasks.
fast
GPT-4o
Shutdown Oct 23, 2026
Fast, intelligent, flexible GPT model.
fast
GPT-4o mini
Fast, affordable small model for focused tasks.
fast
GPT-oss 120b
Most powerful open-weight model
reasoningfast
GPT-oss 20b
Medium-sized open-weight model
reasoningfastestfast
Gemini 3.1 Pro
3x
Best for complex tasks
smartestsmartreasoning
Gemini 3.7 Flash
Best for coding and agentic tasks
Context window: 1,000,000
reasoningfastcoding
Gemini 3.6 Flash
Best for everyday tasks
Context window: 1,000,000
reasoningfast
Gemini 3.5 Flash
Best for everyday tasks
reasoningfast
Gemini 3 Flash
Best for everyday tasks
reasoningfast
Gemini 2.5 Flash Lite
Best for high volume tasks
reasoningfast
Anthropic
Claude Fable 5
3xPro
Anthropic's most capable model for long-horizon agentic work.
Context window: 1,000,000
smartestreasoningcodingsmart
Claude Opus 5
3xPro
For complex agentic coding and enterprise work.
Context window: 1,000,000
reasoningsmartcoding
Claude Sonnet 5
Pro
Balanced Claude 5 model for coding, writing, and everyday agentic work.
Context window: 1,000,000
reasoningsmartcodingfast
Claude Opus 4.7
3xPro
All-around professional model
Context window: 1,000,000
reasoningsmart
Claude Opus 4.6
3xPro
Legacy All-around professional model
Context window: 1,000,000
reasoningsmart
Claude Sonnet 4.6
Pro
Hybrid reasoning model
Context window: 1,000,000
reasoningsmartfast
Claude Sonnet 4.5
Pro
Hybrid reasoning model
reasoningsmartfast
Claude Haiku 4.5
Fast, lightweight Claude model for everyday chat and quick reasoning.
reasoningsmartfast
Claude Opus 4.5
3xPro
Legacy professional model
reasoningsmart
xAI
Grok 4.5
xAI's smartest model for coding, knowledge work, and STEM.
Context window: 500,000
smartestreasoningcodingsmart
Grok 4.3
Strong all-around Grok model for reasoning, coding, and everyday agentic work.
Context window: 1,000,000
reasoningsmartcodingfast
Grok 4.20
Long-context Grok model for research, tool use, and multi-step tasks.
Context window: 2,000,000
reasoningsmartfast
Grok 4.20 Multi Agent
Multi-agent Grok 4.20 for deep research with coordinated tool use.
Context window: 2,000,000
reasoningsmart
Grok Build
Fast coding model for agentic software engineering and Grok Build workflows.
Context window: 256,000
codingreasoningfast
Choose by task type
The same model is rarely best for every job. A practical workflow is to decide what kind of output you need, pick the smallest reliable option, then compare another model when the answer affects real work.
Task
Good starting point
What to watch
Planning and analysis
Reasoning-focused models
Use these for tradeoffs, debugging plans, product decisions, and tasks where you want the model to show more careful structure.
Implementation and refactoring
Coding-capable models
Use these when the output needs to fit real code, follow constraints, explain errors, or produce a change plan.
Translation and tone review
Strong writing models
Use these when wording, nuance, and readability matter more than raw speed or tool use.
A practical guide to choosing the right model
People often compare providers by hype alone. In practice, a better rule is to start with what the task demands, then move to the smallest model that produces a trustworthy result. That is the operating idea behind Deni AI.
Start with the task, not the brand
Choose based on the job you need done: quick drafting, careful reasoning, coding, or side-by-side comparison.
Use faster models for iteration
When the work is exploratory, speed matters. Fast models help you refine prompts before moving to more expensive reasoning models.
Escalate to stronger reasoning when the stakes increase
Planning, debugging, evaluations, and nuanced tradeoffs usually benefit from a model with stronger reasoning behavior.
Compare outputs before you trust them
No model is correct all the time. Deni AI is most valuable when you can inspect multiple answers without changing products.
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