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Get started freeo3 vs Gemini 1.5 Flash
Compare o3 and Gemini 1.5 Flash. Build AI products powered by either model on Appaca.
Model Comparison
| Feature | o3 | Gemini 1.5 Flash |
|---|---|---|
| Provider | OpenAI | |
| Model Type | text | text |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Input Cost | $2.00/ 1M tokens | $0.07/ 1M tokens |
| Output Cost | $8.00/ 1M tokens | $0.30/ 1M tokens |
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With Appaca you don't have to pick — build apps that are powered by o3, Gemini 1.5 Flash, for your specific use case.
Build your first app freeStrengths & Best Use Cases
o3
OpenAI1. Advanced reasoning capability
- Designed for multi-step thinking across text, code, and visual inputs.
- Excels at math, science, logic puzzles, and complex analytical workflows.
2. Strong performance across domains
- Highly capable in technical writing, data analysis, and structured problem-solving.
- Useful for research, engineering tasks, and intricate instruction-following.
3. Visual reasoning support
- Accepts image inputs, enabling tasks such as diagram analysis, chart interpretation, and visual logic assessments.
4. High output capacity
- Up to 100,000 output tokens, supporting long-form content, technical breakdowns, and multi-part solutions.
5. Excellent instruction following
- Produces detailed, step-by-step responses for tasks requiring precision and clarity.
- Ideal for educational explanations, system design reasoning, and code walkthroughs.
6. Large 200K context window
- Handles long documents, multi-file reasoning, or extended conversations with minimal loss of context.
7. Broad API support
- Works with Chat Completions, Responses, Realtime, Assistants, Batch, Embeddings, Image Generation, and more.
- Supports streaming and function calling for advanced workflows.
8. Positioned as a legacy reasoning model
- Remains extremely capable but formally succeeded by GPT-5, which offers stronger reasoning and performance.
Gemini 1.5 Flash
Google1. Extremely fast and cost-efficient
- Designed for ultra-low latency inference.
- Handles high-throughput real-time applications and large-scale pipelines.
2. Strong multimodal capabilities
- Accepts text, images, audio, video, and PDFs.
- Efficient cross-modal understanding suitable for classification, extraction, and captioning.
3. Excellent for long-context tasks
- Supports up to 1M tokens, enabling analysis of long documents, transcripts, and entire codebases.
- Performs well on long-context translation and summarization.
4. Optimized for production workloads
- Low operational cost and fast inference make it ideal for enterprise automation.
- Great for chatbots, customer support systems, and background agent tasks.
5. High throughput with scalable rate limits
- Flash variants support extremely high RPM for high-traffic environments.
6. Reliable performance on everyday tasks
- Good at chat, rewriting, transcription, extraction, and structured reasoning.
- More efficient than Pro for tasks that don't require deep reasoning.
7. Ideal for multimodal high-volume apps
- Strong performance on captioning, OCR-style extraction, audio transcription, and video understanding.
8. Designed for developer workflows
- Supports function calling, structured output, and integration with the Gemini API and Vertex AI.
Prompts to Get Started
Use these prompts to power AI products you build on Appaca. Each works great with the models above.
Best for o3
textDemand Forecast Narrative
Write a narrative analysis accompanying a demand forecast for planning purposes.
Partnership Dissolution Guide
Outline the steps and considerations for dissolving a business partnership.
Accounts Receivable Aging Analysis
Analyse an AR aging report and recommend collection actions.
Best for Gemini 1.5 Flash
textSingle-Family Home Listing
Write a compelling MLS-ready property listing description for a single-family home. Highlights key features and lifestyle appeal.
Customer Satisfaction Survey Email
Send a brief customer satisfaction survey email to gather product and experience feedback. Improves retention through proactive listening.
Salary Negotiation Email
Write a professional salary negotiation email responding to a job offer. Confident, evidence-based, and relationship-preserving.