GPT Image 1.5 vs Mouse-1: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of GPT Image 1.5 and Mouse-1 — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
GPT Image 1.5
OpenAI
Cost-efficient GPT-5 image generator for high-quality visuals, precise edits, and UI designs up to 4× faster.
Key features
- GPT-5 Powered Generation: Uses GPT-5-based image synthesis capabilities to produce detailed visuals and creative outputs with improved semantic understanding.
- Cost-Efficient Processing: Optimized to reduce compute costs per image, enabling larger-scale generation or lower-priced usage for teams and projects.
- Fast Throughput (Up to 4×): Engineered for accelerated image creation and editing workflows, reducing iteration time for designers and content teams.
- Precise Image Edits: Supports targeted edits and refinements to existing images, enabling corrections and modifications without full re-generation.
- UI Design Output: Tailored to generate UI components and mockups, helping product designers rapidly prototype interfaces and visual assets.
- High-Quality Visuals: Focus on producing clean, high-fidelity images suitable for marketing, product imagery, and design presentations.
- Cost-efficient image generation
- High-quality visual outputs
- Precise image edits
- UI design generation
- Up to 4× faster generation throughput
Best for
- Rapid UI Prototyping: Generate multiple UI mockups and component variations quickly to iterate on app and web interfaces during product design sprints.
- Precise Asset Edits: Apply targeted corrections or enhancements to product photos and marketing images without recreating the entire visual.
- High-Volume Visual Production: Produce large batches of marketing visuals or social media imagery while managing compute costs for startups and agencies.
- Design Exploration: Create diverse concept art and visual directions for branding exercises, enabling fast A/B comparisons of styles and layouts.
- Prototype-to-Presentation Workflow: Turn rough design sketches or briefs into polished visuals for stakeholder demos and pitch materials.
- Cost-Conscious Creative Teams: Allow small teams to scale image generation and iteration without incurring high per-image costs.
- Rapid creation of marketing visuals and illustrations
- Iterative UI and product-design mockups
- Precise image edits and refinements
- Fast prototyping of visual assets for applications and websites
Mouse-1
Mouse
Mouse-1 is a fast, low-cost decision model that plugs into agent harnesses to handle routing, gating and verification.
Key features
- Decision Layer for Agents: Takes agent state and options and returns probabilities so the harness can route, gate and verify.
- About 100 ms Latency: Answers faster than a chat model's first token.
- Batch Decisions: One request answers up to 128 questions.
- Prompt-Injection Resistance: Chooses only from supplied options; planted instructions changed 0% of decisions in vendor tests.
- Zero Data Retention: Requests are scored and dropped, never stored or used for training.
- Image and Document Classification: Handles content moderation, document routing and browser-state detection.
Best for
- Agent Routing: Deciding which model or tool an agent should use next.
- Action Gating: Approving or blocking risky agent actions cheaply.
- Content Moderation: Classifying images or text as safe or unsafe.
- Document Routing: Sending invoices, contracts and IDs to the right workflow.
- Browser Agents: Detecting screen state such as login required or error.
- Cost Reduction: Offloading small decisions from expensive frontier models.