CrushOn AI Models Compared: GPT-4o, Claude 3.5 Sonnet, MythoMax & More (2026)

Most AI companion platforms offer one AI model and tune it for their use case. CrushOn AI offers four named models — GPT-4o, Claude 3.5 Sonnet, MythoMax, and Taurus Pro 8K — each with genuinely different strengths and different plan requirements. Choosing the right model for your use case isn't just a nice-to-have: the difference between MythoMax and the free default model, or between Claude 3.5 Sonnet and GPT-4o for a specific scenario, is significant enough to affect how enjoyable the platform is. This guide tests them with practical use cases.

Model Availability by Plan

Model switching is permitted mid-conversation on Premium and Deluxe tiers — you can start with MythoMax for a roleplay scenario and switch to Claude 3.5 Sonnet for a conversation-heavy segment without losing your chat history.

GPT-4o: Creative Energy

GPT-4o is OpenAI's flagship model, and its defining characteristic on CrushOn AI is creative generativity — the quality of being surprising, varied, and expressive in ways that feel inspired rather than mechanical.

In practice, GPT-4o conversations have a distinctive vitality. The model takes initiative in narratives, introduces unexpected details, and writes descriptively in ways that lesser models don't achieve. When a conversation calls for imaginative storytelling, vivid scene-setting, or a character who feels alive rather than scripted, GPT-4o excels.

Testing observations:

• Creative collaborative stories with GPT-4o produced the most varied, inventive outputs of any model tested
• Roleplay character consistency was good but not as strong as MythoMax for strict persona adherence
• Very long conversations showed slight context drift — Claude 3.5 Sonnet handles extended context more precisely
• NSFW content: available and creative, but GPT-4o occasionally defaults to more conventional scenarios compared to MythoMax

GPT-4o requires Premium plan ($14.99/month) or Deluxe.

Best used for: open-ended creative roleplay, collaborative storytelling, scenarios where creative surprise matters.

Claude 3.5 Sonnet: Context Intelligence

Claude 3.5 Sonnet is Anthropic's flagship model. Its defining characteristic is contextual intelligence — an ability to track, recall, and appropriately apply information from earlier in a conversation that exceeds what other models typically achieve.

For users engaged in character-driven roleplay with complex backstories, ongoing narrative arcs, or detailed character personalities defined in the character card, Claude 3.5 Sonnet delivers the most reliable adherence to established context. When a character's backstory says they react a certain way to a specific situation, Claude 3.5 Sonnet remembers that and applies it more consistently.

Testing observations:

• Character card adherence was strongest of all tested models — defined personality traits influenced responses reliably
• Emotional tone and nuance in conversations felt most natural and human of all models
• Extended conversation threads maintained context better than GPT-4o or MythoMax
• NSFW performance: very capable, though occasionally slightly more conservative than MythoMax on the most explicit scenarios

Claude 3.5 Sonnet requires Premium plan ($14.99/month) or Deluxe.

Best used for: long-form character-driven roleplay, conversations requiring emotional nuance, scenarios where character consistency across sessions matters most.

MythoMax: The Roleplay Specialist

MythoMax was fine-tuned specifically for creative roleplay by the AI community. It is not a general-purpose model adapted to roleplay — it was built for it from the ground up. This distinction shows in practice.

What sets MythoMax apart:

• Fewest content refusals of any model on CrushOn AI in NSFW scenarios
• Strongest character persona maintenance — stays in character through explicit scenarios without breaking immersion
• Natural narrative flow for fantasy, adventure, and romance roleplay
• A tonal quality that feels calibrated to collaborative fiction

MythoMax may produce less sophisticated prose than GPT-4o's peak outputs, but for NSFW roleplay specifically, its willingness to engage and consistent character adherence make it the practical first choice.

Testing observations:

• Maintained character personas through 50+ message extended roleplay sessions
• Fewer refusals or hedging responses than GPT-4o or Claude 3.5 Sonnet on explicit content
• Prose quality is good but not as expressive as GPT-4o's peak outputs
• Works well for structured roleplay scenarios with defined story direction

MythoMax is available from Standard plan ($5.99/month) — the best model accessible at the entry paid tier.

Best used for: NSFW roleplay, character-focused fiction, scenarios where staying in character matters more than literary prose quality.

Taurus Pro 8K: The Long Conversation Model

Taurus Pro 8K is defined primarily by its 8,000-token context window. Where standard models lose track of earlier conversation content as the thread grows long, Taurus Pro 8K retains significantly more history before context truncation occurs.

The practical value: extended story arcs where events, character decisions, and world-building details from early in the conversation need to remain accessible. If you've been building a collaborative story for several hours, Taurus Pro 8K is less likely to "forget" key plot points or revert character behaviors to defaults.

The trade-off: Taurus Pro 8K's overall conversation quality is not at the level of GPT-4o or Claude 3.5 Sonnet. It's a specialized tool for a specific bottleneck, not a general quality upgrade.

Taurus Pro 8K is available on Premium and Deluxe tiers.

Best used for: very long continuous story arcs, scenarios where extended context window is the primary limitation.

Model Comparison: Use Case Matrix

Model Switching Tips

If you're on Premium or Deluxe, test different models for the same character to find the best fit. The same character card can produce meaningfully different conversation experiences across models.

A practical workflow:

1. Start a new conversation with Claude 3.5 Sonnet to establish the character and initial context
2. If the conversation becomes explicitly NSFW and you notice occasional hesitation, switch to MythoMax
3. Return to Claude 3.5 Sonnet for conversation-heavy, emotionally complex segments

The switch takes a moment and does not delete conversation history — you simply select the new model from the conversation settings.

For pricing information on which plan is needed for your preferred model, see our pricing guide. For a full CrushOn AI overview, see our main review.

Frequently Asked Questions