Fitness Coach Viktor
gpt-5.6-sol
Personal growth & wellbeing

Fitness Coach Viktor

Your practical, encouraging coach for safe, effective training plans at home or in the gym.

Why choose this persona?

No prompts needed

The persona is already professionally tuned. You don't need to search for complex prompts to get the perfect result.

Understands you instantly

Thanks to specialization, the AI knows the context of your task and gives precise answers without long explanations.

Expert quality

The output quality is significantly higher than a standard chat due to focused training.

Conversation starters:

I want to lose about 20 lb in 12 weeks. I can train 3 days a week and I have a gym membership.

I’ve got adjustable dumbbells and bands. Can you build a 4‑day plan to gain muscle?

I’m new to training. I can do 20 minutes a day at home. Where do I start?

Try for free

Join thousands of users

World's best models

We select the world's best model for this persona and monitor AI developments so you always get the best.

Absolute protection

We protect your privacy. All messages are encrypted with AES-256-CBC. Even we cannot read them.

History at your fingertips

Easy access to your knowledge archive. Return to important ideas and dialogue context at any moment.

Tired of random internet workouts that don't deliver results? Want to train effectively but feel unsure how to start or avoid injury? You don't need another exercise list; you need a clear system. Meet Viktor, your personal AI fitness coach.

Viktor is a practical, encouraging coach who creates safe, effective training plans based on science. He provides no-nonsense guidance, building a program perfectly tailored to your goals, experience level, and available equipment—whether you're in a fully-equipped gym or at home with just a pair of dumbbells.

How can AI fitness coach Viktor help you?

He'll ask key questions about your goals, lifestyle, and limitations to build the perfect plan for you to:

  • Lose fat without losing strength and energy.
  • Build muscle with minimal equipment.
  • Run your first 5K or 10K while staying injury-aware.
  • Break through plateaus in your bench press, squat, or deadlift.
  • Train safely if you're over 50 or have a sensitive back.
  • Stay fit while traveling with effective 30-minute workouts.

You get more than just a workout list; you get a complete system. This includes clear rules for progression, guidance on recovery and nutrition, and specific metrics to track your success. Viktor keeps you accountable and helps you move toward your goal, one step at a time.

Start your conversation with Viktor and get your actionable plan today.

Why it's convenient

Every feature is available right away — no plans, subscriptions or hidden terms

Pay as you go

You're charged only for the tokens you actually use. Funds sit on your balance and are spent as you work.

Cost forecast before you send

See the approximate cost of a request in advance — no surprises on your bill.

Your own API keys

Connect your own OpenAI, Gemini, Claude, DeepSeek and other keys and work on your terms.

Team collaboration

Shared chats and projects, member invites and a single balance for the whole team.

Encrypted messages

Your conversations are encrypted and stay private.

Many models in one window

OpenAI, Claude, Gemini and more — switch between them without changing the interface.

Russia without a VPN

Direct access to global models, no workarounds or blocks.

One interface for any task

Study, code, writing, analytics, design — all in one chat with persona presets.

How much does it cost?

No subscriptions or hidden charges. First, see the estimated cost of a single request, then explore detailed model pricing if needed.

How Much Do Real Requests Cost?This is an estimate. In a real chat, input tokens typically include the system prompt, conversation history, attached documents, and the user's new message. Therefore, a long conversation may cost significantly more than the first message.

Approximately
$0.03

Short question

A quick question with a short answer — a typical chat request.

1,200 input700 output
Approximately
$0.13

Long conversation

A conversation with history, where the previous context is sent along with the new message.

12,000 input2,000 output
Approximately
$0.30

Working with a document

A large text or document as input and a detailed structured response.

35,000 input3,000 output

Cost of a Typical Conversation

A comparison of models for a message with approximately 2,000 input tokens and 800 output tokens.

ModelTypical conversationAn estimated calculation for one chat message: around 2,000 input tokens and 800 output tokens. The cost includes the question, system prompt, part of the conversation history, and the model's response. The actual price depends on the length of the context and response.Billing unit
qwen-max-2025-01-25
qwen-max-2025-01-25
Qwen
$0.03per request
qwen-plus-latest
qwen-plus-latest
Qwen
$0.01per request
qwen-turbo-latest
qwen-turbo-latest
Qwen
$0.00per request
qwen-vl-max-2025-04-08
qwen-vl-max-2025-04-08
Qwen
$0.02per request
qwen3-32b
qwen3-32b
Qwen
$0.01per request
qwen3-vl-plus
qwen3-vl-plus
Qwen
$0.00per request
qwen3.6-flash
qwen3.6-flash
Qwen
$0.00per request
qwen3.7-plus
qwen3.7-plus
Qwen
$0.00per request
qwen3.8-max
qwen3.8-max
Qwen
$0.02per request
gpt-5.5-pro-2026-04-23
gpt-5.5-pro-2026-04-23
OpenAI
$0.52per request
gpt-5.6-luna
gpt-5.6-luna
OpenAI
$0.00per request
gpt-5.6-sol
gpt-5.6-sol
OpenAI
$0.07per request
gpt-5.6-terra
gpt-5.6-terra
OpenAI
$0.03per request
gemini-3.1-pro-preview
gemini-3.1-pro-preview
Gemini
$0.05per request
gemini-3.5-flash
gemini-3.5-flash
Gemini
$0.01per request
grok-4.5
grok-4.5
X.AI
$0.01per request
grok-build-0.1
grok-build-0.1
X.AI
$0.01per request
claude-fable-5
claude-fable-5
Claude
$0.12per request
claude-haiku-4-5-20251001
claude-haiku-4-5-20251001
Claude
$0.01per request
claude-opus-5
claude-opus-5
Claude
$0.06per request
claude-sonnet-5
claude-sonnet-5
Claude
$0.02per request
deepseek-v4-pro
deepseek-v4-pro
DeepSeek
$0.00per request
kimi-k3
kimi-k3
Moonshot AI
$0.04per request
Add funds

Minimum deposit: ₽100. Funds remain in your balance and are only spent when you use AI models.

We are often asked

What is Riser?

Riser is a single interface for working with different AI models and ready-made AI personas. You can use models from different providers without purchasing a separate subscription for each service.

There are no plans or monthly fees. You top up your balance and pay only for the tokens actually used.

How does payment work?

Riser uses pay-as-you-go billing. You top up your balance and the cost of each request is deducted after it has been processed.

The price depends on the selected model and the number of input and output tokens. There are no subscriptions, monthly fees or automatic recurring charges.

What are tokens?

Tokens are units used by AI models to process text. Your message, the relevant conversation history and the model's answer are all converted into tokens.

Input and output tokens may have different prices. A longer conversation or answer usually requires more tokens and therefore costs more.

How can I see the cost of a request?

An estimated cost is shown in the chat before you send a request. The forecast takes into account the selected model, your message and the conversation context available at that moment.

The estimate is not the final charge because the exact length of the model's answer is not known in advance. After processing, you are charged only for the tokens actually used.

Why can the final cost differ from the estimate?

The exact number of output tokens is only known after the model generates its answer. The final charge may therefore be slightly lower or higher than the forecast.

Conversation history also affects the price: in a long chat, more context may be sent to the model with each new request.

What are AI personas?

An AI persona is a ready-made preset that combines a master prompt, task-specific instructions, scenarios and a preferred AI model.

A persona helps you start working without configuring everything manually. It determines the role, communication style and approach to the task, while requests are still billed by the tokens used by its model.

How is a persona different from an AI model?

A model is the AI engine that processes your request. When you select a model directly, you decide how to formulate the task and can use the available project or chat settings.

A persona is a configured assistant built on top of a model. It already includes a master prompt, role, working scenarios and recommended behavior. Both options use the same token-based billing.

How do I choose a persona?

Choose a persona based on your task: writing, learning, marketing, analytics, career development, image generation or another area.

The persona card shows its description, category and preferred model. You can start with a ready-made persona or create your own preset with custom instructions and a selected model.

Can I create my own persona?

Yes. You can create a personal persona by writing a master prompt, defining its role and instructions, and selecting a suitable AI model.

This is useful for recurring tasks where you want to keep the same tone, rules, workflow or output format without repeating them in every request.

What AI models and providers are available?

Riser provides access to text, image and other AI models from multiple providers, including OpenAI, Anthropic, Google, DeepSeek, xAI, Qwen and others.

The catalog is updated as models are added, replaced or archived. You can view the currently available models, their capabilities and prices on the AI models page.

Can I use my own API keys?

Yes. Riser supports connecting your own API keys for compatible AI providers. This allows requests to be processed through your provider account while you continue using the Riser interface, projects and chat history.

Availability and billing conditions may depend on the selected provider. API keys are stored in encrypted form.

How do team workspaces work?

You can invite colleagues to a workspace, use shared or private chats and manage work with AI models in one interface.

A shared balance makes it possible to pay for team usage from one account. Access to chats and projects depends on workspace permissions.

What should I do if a request fails or I notice an incorrect charge?

If a request was not processed because of a technical error, or you believe the amount was charged incorrectly, please contact Riser support. Include the approximate time of the request, the model or persona used and a description of the issue.

If the model generated an answer but it did not meet your expectations, try clarifying the request, adding context or selecting another model. AI-generated answers may contain errors and should be checked before being used for important decisions.

How does Riser protect my data?

Requests are transmitted to the selected AI provider so that the model can process them and generate an answer. Different providers may apply different data processing policies.

Messages and connected API keys are stored and transmitted using encryption. Avoid sending passwords, payment details, trade secrets or unnecessary personal data. For more information, see the Privacy Policy.

Where can I follow Riser updates?

Riser is continuously adding new models, features and improvements. You can follow announcements, participate in discussions and share feedback in our Telegram community: @riser_chat.