300 models ranked for email writing. Scored with bonuses for streaming, JSON mode (templates), function calling (CRM), web search (personalization), budget pricing, and large context windows.
| # | Model | Score |
|---|---|---|
| 1 | GPT-5.4 ProOpenAI | 92 |
| 2 | GPT-5.4OpenAI | 92 |
| 3 | GPT-5.2 ProOpenAI | 91 |
| 4 | Claude Opus 4.6 (Fast)Anthropic | 90 |
| 5 | Claude Opus 4.6Anthropic | 90 |
| 6 | Grok 4.20xAI | 89 |
| 7 | GPT-5.3-CodexOpenAI | 89 |
| 8 | GPT-5 ProOpenAI | 89 |
| 9 | Gemini 3 Flash PreviewGoogle | 88 |
| 10 | Grok 4xAI | 88 |
| 11 | GPT-5.1-Codex-MaxOpenAI | 88 |
| 12 | GPT-5.3 ChatOpenAI | 87 |
| 13 | GPT-5.2-CodexOpenAI | 90 |
| 14 | GPT-5.2OpenAI | 90 |
| 15 | o3 Deep ResearchOpenAI | 87 |
| 16 | o3 ProOpenAI | 87 |
| 17 | o3OpenAI | 87 |
| 18 | GPT-5.1 ChatOpenAI | 87 |
| 19 | Claude Sonnet 4.6Anthropic | 85 |
| 20 | Claude Opus 4.5Anthropic | 85 |
| 21 | Grok 4.20 Multi-AgentxAI | 88 |
| 22 | GPT-5 CodexOpenAI | 88 |
| 23 | GPT-5OpenAI | 88 |
| 24 | GPT-5.1OpenAI | 87 |
| 25 | GPT-5.1-CodexOpenAI | 87 |
| 26 | GPT-5.1-Codex-MiniOpenAI | 87 |
| 27 | Gemini 2.5 ProGoogle | 84 |
| 28 | Gemini 2.5 Pro Preview 06-05Google | 84 |
| 29 | Gemini 2.5 Pro Preview 05-06Google | 84 |
| 30 | Claude Sonnet 4.5Anthropic | 82 |
Web search models research prospects before drafting personalized outreach. Function calling pulls CRM data to customize every email with relevant company details.
Large output models generate full newsletter drafts with sections, CTAs, and formatting. Streaming lets you review and edit content as it appears in real-time.
JSON mode outputs structured email templates for bulk campaigns. Budget models under $1/1M tokens make it affordable to generate thousands of personalized variations.
Large context windows process entire email threads for context-aware replies. Models analyze tone, extract action items, and draft appropriate follow-ups automatically.
Top models produce natural-sounding email drafts across tones (formal, friendly, urgent). Provide context about the recipient relationship and purpose for best results. Streaming lets you watch and edit in real-time. Models with large context remember prior email thread content.
Models categorize, prioritize, and summarize incoming emails. They draft replies, flag action items, and extract key information into structured formats. Function calling integrates with Gmail/Outlook APIs for end-to-end email automation.
Yes, models generate personalized subject lines, body copy, and CTAs based on customer segments. They create A/B test variants and adapt messaging for different personas. JSON mode outputs structured email templates for marketing platforms.
Streaming enables instant draft generation. Function calling integrates with email APIs and CRM for context. Large context processes entire email threads. Web search adds current information to replies. Together these cut average reply drafting from 10 minutes to 30 seconds.