---
title: "Gemini Model Catalog"
aliases: [google-gemini-models, gemini-api-models]
tags: [llm, google, gemini, api, models]
sources: [raw/Gemini API    Google AI for Developers.md]
created: 2026-05-08
updated: 2026-05-08
---

## Overview

Google's Gemini API model lineup spans text, audio, image, video, music, embeddings, and robotics. Models are grouped by generation (2.5, 3.x) and tier (Pro > Flash > Flash-Lite). All available via [Google AI for Developers](https://ai.google.dev/gemini-api/docs/models).

---

## Gemini 2.5 Family (Current Stable)

| Model | Tier | Status | Best For |
|-------|------|--------|----------|
| `gemini-2.5-pro` | Pro | Stable | Complex tasks, deep reasoning, coding |
| `gemini-2.5-flash` | Flash | Stable | Price-performance, low-latency, high-volume |
| `gemini-2.5-flash-lite` | Flash-Lite | Stable | Fastest + cheapest multimodal in 2.5 family |
| Gemini 2.5 Flash Live | Flash | Preview | Real-time conversational agents, sub-second audio |
| Gemini 2.5 Flash TTS | Flash | Preview | Controllable text-to-speech, fine style/pacing control |
| Gemini 2.5 Pro TTS | Pro | Preview | High-fidelity TTS for podcasts, audiobooks |
| Imagen 4 (Nano Banana) | Flash | Stable | Native image gen/editing, fast creative workflows |

---

## Gemini 3 Family (Preview / Upcoming)

| Model | Status | Best For |
|-------|--------|----------|
| `gemini-3.1-pro-preview` | Preview | Advanced reasoning, agentic, vibe coding |
| `gemini-3-flash-preview` | Preview | Frontier-class perf at lower cost |
| `gemini-3.1-flash-lite` | Stable | Frontier-class, budget-friendly |
| `gemini-3.1-flash-live-preview` | Preview | Real-time dialogue, voice-first AI |
| `gemini-3.1-flash-tts-preview` | Preview | Low-latency speech generation |
| Nano Banana 2 (image) | Preview | High-efficiency production image gen + editing |
| Nano Banana Pro (image) | Preview | Studio-quality 4K, complex layouts, text rendering |

> **Note:** "Nano Banana" appears to be Google's display alias for Imagen-series image generation models (Imagen 4 family).

---

## Audio Models

| Model | Latency | Use Case |
|-------|---------|----------|
| Gemini 3.1 Flash Live | Low | A2A real-time dialogue, voice-first apps |
| Gemini 3.1 Flash TTS | Low | TTS with expressive audio tags |
| Gemini 2.5 Flash Live | Low | Bidirectional voice + video agents, native audio reasoning |
| Gemini 2.5 Flash TTS | Low | Cost-efficient real-time TTS |
| Gemini 2.5 Pro TTS | High fidelity | Structured workflows (podcasts, audiobooks) |

---

## Generative Media Models

| Model | Type | Status |
|-------|------|--------|
| Nano Banana 2 | Image gen/edit | Preview |
| Nano Banana Pro | Image gen/edit | Preview |
| Nano Banana (2.5) | Image gen/edit | Stable |
| Imagen 4 | Text-to-image (up to 2K) | Stable |
| Veo 3.1 | Video + synced audio | Preview |
| Veo 3.1 Lite | Low-cost video gen/edit | Preview |

---

## Music Generation Models

| Model | Use Case |
|-------|----------|
| Lyria 3 Pro | Full-length songs, structural coherence |
| Lyria 3 Clip | Short clips, loops, ≤30 sec previews |
| Lyria RealTime Experimental | Granular control, real-time streaming |

---

## Tool & Agent Models

| Model | Capability |
|-------|-----------|
| Computer Use Preview | Screen vision + UI actions (click, type, navigate) — browser automation |
| Gemini Deep Research Preview | Agentic multi-step research across hundreds of sources, cited reports |
| Gemini Deep Research Max Preview | Maximum comprehensiveness version of Deep Research |

---

## Specialized Task Models

| Model | Type | Notes |
|-------|------|-------|
| Gemini Embedding 2 | Multimodal embedding | Text + image + video + audio + PDF → unified vector space |
| Gemini Embedding | Text embedding | High-dimensional vectors for semantic search, RAG |
| Gemini Robotics-ER 1.6 | Embodied reasoning | Physical space understanding, multi-step robotic tasks |

---

## Model Version Naming Conventions

| Channel | Example ID | Behavior |
|---------|-----------|----------|
| **Stable** | `gemini-2.5-flash` | Fixed version, rarely changes. Recommended for production |
| **Preview** | `gemini-2.5-flash-preview-09-2025` | Production-eligible, billing enabled, ≥2 weeks deprecation notice |
| **Latest** | `gemini-flash-latest` | Auto-updates to newest release; 2-week email notice before swap |
| **Experimental** | `gemini-*-exp-*` | Not for production, restricted rate limits, may disappear |

---

## Deprecated / Shut Down

| Model | Status | Notes |
|-------|--------|-------|
| Gemini 2.0 Flash | Deprecated | 1M context, native tool use |
| Gemini 2.0 Flash-Lite | Deprecated | Fastest gen-2 |
| Gemini 3 Pro Preview | Shut down | |

---

## Key Takeaways

- **2.5 Flash** is the current go-to for cost/performance balance; **2.5 Pro** for complex reasoning
- **Gemini 3.x** is in preview — 3.1 Flash-Lite is already stable, rest require preview access
- Gemini has dedicated **audio Live models** for real-time voice agents (A2A streaming)
- **"Nano Banana"** = Google's display name for Imagen-series image models in the API console
- **Computer Use** model can automate browser UIs natively — similar to Anthropic's computer use
- **Gemini Embedding 2** is multimodal — handles text, images, video, audio, PDF in one embedding space
- Use `gemini-flash-latest` alias with caution — it hot-swaps on new releases with only 2-week notice
- Experimental models have no stability guarantees and restrictive rate limits

---

## Related Articles

- [[wiki/llm-models/claude-model-catalog|Claude Model Catalog]] — Anthropic Opus/Sonnet/Haiku comparison
- [[wiki/llm-models/openai-model-catalog|OpenAI Model Catalog]] — GPT-5.x, o-series, audio models
- [[wiki/tech-patterns/_index|Tech Patterns]] — RAG, embeddings, AI patterns used in projects
- [[wiki/architecture/_index|Architecture]] — Multi-agent AI, RAG system design

---

## Sources

- Raw: `raw/Gemini API    Google AI for Developers.md`
- Original: https://ai.google.dev/gemini-api/docs/models (captured 2026-05-08)
