CoModel: AI Models & Prompts
Prompt Optimizer & Chat
Only for iPhone
Free · In‑App Purchases
iPhone
One prompt, many models, side-by-side answers. Improve your prompt, then compare quality, speed, tokens and cost with your own API keys. Web search with cited sources.
COMPARE AI MODELS WITH YOUR OWN API KEYS
CoModel is a BYOK AI model comparison workspace and API client for people who already use model APIs. Send one prompt to selected models, keep each conversation separate, and compare answer quality, response time, token usage, cache usage, context limits, and estimated cost before choosing what fits your task.
BRING YOUR OWN MODEL ACCESS
CoModel does not include model credits or API access. You need valid API keys from the providers you choose. Provider API charges are separate from any CoModel subscription.
ANALYZE IMAGES, PDFS, AND DOCUMENTS
Add photos, screenshots, PDFs, text files, JSON, CSV, DOCX, PPTX, or XLSX files for compatible models. Preview attachments before sending, then ask supported models questions about their content.
Attachment support varies by model, file format, provider API, and verified connection capabilities. Unsupported models receive only the text question and are clearly identified.
COMPARE ANSWERS, USAGE, AND COST
• Ask multiple AI models the same question
• Review each response in a separate model tab
• Continue conversations with independent per-model context
• Track tokens, requests, cache usage, response time, and estimated cost
• Set model budgets and manage context limits
• Review usage statistics by model, currency, and date range
• Search history with text, hybrid, or on-device semantic search
• Enable optional web search with your own configured search key
• Import and export model configurations with Pro
Use CoModel to evaluate models for coding, research, writing, study, document review, summaries, product work, and everyday analysis.
LOCAL-FIRST DATA BOUNDARY
API keys are kept in your device's secure storage. Model settings, conversations, usage records, search indexes, and semantic vectors remain on your device by default.
Prompts, context, and attachments are sent directly from your device to the model providers you configure. CoModel does not proxy model requests through its own server.
FREE AND PRO
Free lets you compare up to 2 models. Pro supports up to 6 models and unlocks expanded history, custom statistics ranges, model configuration transfer, and additional advanced features.
AI-generated content may be inaccurate or incomplete. Verify important information before relying on it.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Prompt optimization on every question and follow-up: refine your prompt by meaning, then undo or reuse it.
• Model list updated: each provider's newest models are now available.
• Adapted for launch in China mainland, with updated provider support.
The developer, 蕴杰 戚, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Search History
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 蕴杰 戚
- Size
- 329 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
English and 9 more
- English, Arabic, French, German, Japanese, Korean, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- CoModel $2.49
- CoModel $0.99
- Copyright
- © 2026 YunJie Qi