Models
Model providers have different strengths. Use the summaries below to choose a provider, then pick a model family that matches the task.
OpenAI (GPT)
Strong all-around for writing, planning, coding, and everyday questions. Includes GPT models from OpenAI plus GPT OSS variants served through the Vercel AI Gateway and Cerebras.
GPT-4o series
| Model | Requests | Best For |
|---|---|---|
| GPT-4o · Aug. 2024 | 1 premium request | August 2024 checkpoint of gpt-4o with enhanced capabilities. |
| GPT-4o · Nov. 2024 | 1 premium request | November 2024 checkpoint of gpt-4o with latest improvements. |
| GPT-4o | 1 premium request | OpenAI's default gpt-4o through API. |
| GPT-4o mini | 1 base request | Agile, cost-efficient 4o variant ideal for everyday conversation. |
GPT-audio series
| Model | Requests | Best For |
|---|---|---|
| GPT audio mini | 3 base requests | Cost-efficient audio-native chat model. Supports text + audio output in chat completions. |
| GPT audio mini · Dec. 2025 | 3 base requests | Pinned December 2025 snapshot of GPT Audio mini for stable behavior. |
| GPT Audio 1.5 | 5 premium requests | OpenAI's full-size audio-native chat model. Replies in text and speech in chat completions. OpenAI's recommended replacement for GPT Audio mini, which shuts down January 20, 2027. Does not support web search. |
GPT-6 series
| Model | Requests | Best For |
|---|---|---|
| GPT-6 Sol | 1 premium request | OpenAI's GPT-6 reasoning model for complex professional work, coding, research, and agentic tool use, with a 1.05M-token context window. OpenAI's recommended replacement for GPT-5.1 and GPT-5.3-Codex. |
| GPT-6 Luna | 1 base request | OpenAI's efficient GPT-6 model for fast, high-volume chat, extraction, ranking, and lightweight tool use, with a 1.05M-token context window. OpenAI's recommended replacement for GPT-4o, GPT-4o mini, GPT-4.1, GPT-4.1 mini, and GPT-5.4 nano. |
GPT-5.6 series
| Model | Requests | Best For |
|---|---|---|
| GPT-5.6 Sol | 5 premium requests | OpenAI's frontier GPT-5.6 model for complex professional work, coding, research, and agentic tool use. |
| GPT-5.6 Terra | 2 premium requests | GPT-5.6's balanced model for capable everyday work, coding, vision, and tool-using chat at a lower cost. |
| GPT-5.6 Luna | 1 premium request | GPT-5.6's cost-sensitive model for fast, high-volume chat, extraction, ranking, and lightweight tool use. |
GPT-5.5 series
| Model | Requests | Best For |
|---|---|---|
| GPT-5.5 | 3 premium requests | OpenAI flagship for the most complex professional work. 1.05M context, reasoning, and vision. |
GPT-5.4 series
| Model | Requests | Best For |
|---|---|---|
| GPT-5.4 | 2 premium requests | Latest GPT-5.4 flagship chat model with stronger reasoning and accuracy. |
| GPT-5.4 mini | 1 premium request | Higher-capability GPT-5.4 mini for high-volume coding, computer use, and subagent workflows. |
| GPT-5.4 nano | 2 base requests | Cheapest GPT-5.4-class model for simple high-volume tasks such as extraction, ranking, and lightweight subagents. |
GPT-5.3 series
| Model | Requests | Best For |
|---|---|---|
| GPT-5.3-Codex | 1 premium request | The most capable agentic coding model to date. Optimized for agentic coding tasks in Codex or similar environments. 400K context, 128K max output. Reasoning off by default. |
GPT-5.2 series
| Model | Requests | Best For |
|---|---|---|
| GPT-5.2 | 1 premium request | Pinned GPT-5.2 snapshot for stable behavior. |
GPT-5.1 series
| Model | Requests | Best For |
|---|---|---|
| GPT-5.1 | 1 premium request | Pinned snapshot gpt-5.1-2025-11-13. The most intelligent model yet, with faster responses and increased steerability. |
GPT-5 series
| Model | Requests | Best For |
|---|---|---|
| GPT-5 | 1 premium request | Frontier reasoning depth with best-in-class reliability. |
| GPT-5 mini | 3 base requests | Responsive, budget-friendly member of the GPT-5 family. |
| GPT-5 nano | 1 base request | Ultra light-touch assistant for simple interactions. |
GPT-4.1 series
| Model | Requests | Best For |
|---|---|---|
| GPT-4.1 | 1 premium request | GPT-4 refinement designed for coding with broad tool compatibility. |
| GPT-4.1 mini | 2 base requests | Compact GPT-4.1 option for consistent tone and speed. |
O-series
| Model | Requests | Best For |
|---|---|---|
| o3 | 1 premium request | Reasoning-focused o-series model optimized for long horizon tasks. |
GPT-oss series
| Model | Requests | Best For |
|---|---|---|
| GPT OSS 120b | 1 base request | OpenAI's open-weight 117B MoE via Fireworks. Production-grade reasoning, agentic tasks, function calling. 131k context. Does not support web search or image input. |
| GPT OSS 120B Fast | 1 premium request | OpenAI's GPT OSS 120B routed through Cerebras chat completions for very fast tool-capable replies. 131k context. Does not support web search or image input. |
| GPT OSS 20b | 1 base request | OpenAI's open-weight 21B MoE via Fireworks. Lower latency, local or specialized use-cases. 131k context. Does not support web search, image input, or function calling. |
Google (Gemini)
Great for long instructions, large context, and quick iteration on bigger tasks.
Gemini 2.5 series
| Model | Requests | Best For |
|---|---|---|
| Gemini 2.5 Pro | 1 premium request | state-of-the-art multipurpose model, which excels at coding and complex reasoning tasks. |
| Gemini 2.5 Flash | 3 base requests | first hybrid reasoning model which supports a 1M token context window and has thinking budgets. |
| Gemini 2.5 Flash-Lite | 1 base request | smallest and most cost effective model, built for at scale usage. |
Gemini 3.1 series
| Model | Requests | Best For |
|---|---|---|
| Gemini 3.1 Pro Preview | 3 premium requests | Next iteration of Gemini 3 Pro: performance, behavior, and intelligence improvements. 1M/64k context. Agentic workflows, autonomous coding, complex multimodal. Jan 2025. |
| Gemini 3.1 Flash-Lite | 2 base requests | Stable Gemini 3.1 Flash-Lite model for high-volume agentic tasks, translation, and simple data processing. 1M/65k context. |
Gemini 3 series
| Model | Requests | Best For |
|---|---|---|
| Gemini 3 Flash Preview | 4 base requests | Preview of Gemini 3 Flash. 1M/64k context. Jan 2025. |
Gemini 3.5 family
| Model | Requests | Best For |
|---|---|---|
| Gemini 3.5 Flash | 2 premium requests | Gemini 3.5 Flash combines frontier intelligence with fast responses, search grounding, and multimodal strengths. Uses 2 premium requests per send before length multipliers. |
| Gemini 3.5 Flash-Lite | 3 base requests | Google's fastest Gemini 3.5 model, optimized for high-volume agentic work, document processing, translation, and classification. Uses 3 base requests per send before length multipliers. |
Gemini 3.6 family
| Model | Requests | Best For |
|---|---|---|
| Gemini 3.6 Flash | 2 premium requests | Google's production workhorse for coding, agentic execution, knowledge work, and multimodal analysis. Uses 2 premium requests per send before length multipliers. |
Anthropic (Claude)
Good for careful writing, nuanced edits, and thoughtful longer responses.
Claude series
| Model | Requests | Best For |
|---|---|---|
| Claude Sonnet 5.5 | 5 premium requests | Anthropic's newest Sonnet: stronger reasoning, coding, and agent planning than Sonnet 4.6 at a lower price, with a 1M-token context window. Anthropic's recommended replacement for Sonnet 4.5, which retires November 30, 2026. |
| Claude Sonnet 4.6 | 5 premium requests | Anthropic's most capable Sonnet yet. Full upgrade across coding, long-context reasoning, agent planning, and design. 1M token context window in beta. Same pricing as Sonnet 4.5. |
| Claude Sonnet 4.5 | 5 premium requests | Anthropic's balanced Claude model with strong reasoning and efficiency. |
| Claude Haiku 4.5 | 1 premium request | Anthropic's fastest Claude model, optimized for speed and cost efficiency. |
xAI (Grok)
Good for quick back-and-forth, practical answers, and fast drafting.
Grok-3
| Model | Requests | Best For |
|---|---|---|
| Grok-3 Mini | 1 base request | Compact Grok-3 variant for cost-effective conversations. |
Grok-4.20
| Model | Requests | Best For |
|---|---|---|
| Grok-4.20 Reasoning | 1 premium request | xAI's flagship Grok 4.20 reasoning model with a 2M-token context window, stronger multi-step reasoning, and native tool support. |
| Grok-4.20 Non-Reasoning | 1 premium request | Latency-optimized Grok 4.20 variant with a 2M-token context window, image understanding, and native tool support. |
Grok-4.3
| Model | Requests | Best For |
|---|---|---|
| Grok 4.3 | 1 premium request | xAI's latest flagship Grok model with 1M context, image input, configurable reasoning, and strong agentic tool use. |
Grok-4.5
| Model | Requests | Best For |
|---|---|---|
| Grok 4.5 | 1 premium request | xAI's latest flagship for coding, agentic tasks, knowledge work, and tool-using chat with configurable reasoning. |
Grok-build
| Model | Requests | Best For |
|---|---|---|
| Grok Build 0.1 | 1 premium request | xAI's dedicated coding model, built for agentic software engineering, code review, and debugging across large repositories. |
DeepSeek
Strong for reasoning and complex tasks. DeepSeek v3.x models and DeepSeek V4 Flash are available on all tiers; DeepSeek V4 Pro is Premium. V4 Flash and V4 Pro have 1M context and function calling. No web search or images.
DeepSeek
| Model | Requests | Best For |
|---|---|---|
| DeepSeek v3.1 | 2 base requests | DeepSeek-V3.1 via the Vercel AI Gateway: long-context extension (32K→128K), UE8M0 FP8 scale. Post-trained on DeepSeek-V3.1-Base. Served only by zero-data-retention providers. Does not support web search or image input. |
| DeepSeek v3.2 | 3 base requests | DeepSeek v3.2 via the Vercel AI Gateway: high efficiency with superior reasoning and agent performance. 675B MoE. Served only by zero-data-retention providers. Does not support web search or image input. |
| DeepSeek V4 Flash | 1 base request | DeepSeek-V4-Flash-0731 via the Vercel AI Gateway: official DeepSeek V4 Flash release with stronger agentic performance, served as a serverless MoE at 1M context scale. Function calling supported. Uses 1 base request per send before length multipliers. Does not support web search or image input. |
| DeepSeek V4 Pro | 1 premium request | DeepSeek-V4-Pro-0813 via the Vercel AI Gateway: official DeepSeek V4 Pro release with stronger agentic performance, served as a serverless 1.6T MoE at 1M context scale. Function calling supported. Uses 1 premium request per send before length multipliers. Does not support web search or image input. |
Qwen
Strong for multimodal chat, tool use, and general flagship work. Available on all tiers; Qwen 3.6 Plus and Qwen 3.7 Plus are served via the Vercel AI Gateway. Supports image input, but not web search.
Qwen
| Model | Requests | Best For |
|---|---|---|
| Qwen 3.6 Plus | 4 base requests | Alibaba's flagship closed Qwen model via the Vercel AI Gateway. 396B MoE with function calling and image input support. Available serverless on just4o.chat at the base tier. Uses 4 base requests per send before length multipliers. Does not support web search. |
Moonshot (Kimi)
Good for complex reasoning, multimodal agentic tasks, and long-horizon coding. Kimi K2.5 and K2.6 support images. No web search.
Kimi
| Model | Requests | Best For |
|---|---|---|
| Kimi K2.5 | 1 premium request | Moonshot AI's flagship agentic model via the Vercel AI Gateway. Unifies vision and text, thinking and non-thinking. 256k context. Supports image input. Served only by zero-data-retention providers. Does not support web search. |
MiniMax
Strong for coding, complex tasks, and office work. MiniMax M3 supports image input. Available on all tiers. No web search.
MiniMax
| Model | Requests | Best For |
|---|---|---|
| MiniMax M2.5 | 2 base requests | MiniMax M2.5 via the Vercel AI Gateway: state-of-the-art coding, agentic tool use, search, and office work. 228B MoE, 196k context. Function calling supported. Served only by zero-data-retention providers. Does not support web search or image input. |
| MiniMax M3 | 2 base requests | MiniMax M3 via the Vercel AI Gateway: agentic model for complex tool use, productivity tasks, Agent Teams, and long-horizon workflows with a 512k-token context window. Supports image input and function calling. Does not support web search. |
Z.ai (GLM)
Strong for coding, reasoning, and long-horizon agentic workflows. GLM models are available through the Vercel AI Gateway and Cerebras; GLM 4.7 Fast is the Cerebras-backed Premium OSS variant. No web search or images.
GLM 4.7 family
| Model | Requests | Best For |
|---|---|---|
| GLM 4.7 | 1 premium request | Z.ai's GLM-4.7 via the Vercel AI Gateway: a coding, reasoning, and agentic model with 200k context and function calling. Served only by zero-data-retention providers. Does not support web search or image input. |
GLM 5 family
| Model | Requests | Best For |
|---|---|---|
| GLM 5 | 1 premium request | Z.ai's GLM-5 via the Vercel AI Gateway: stronger systems engineering, long-horizon agentic work, and enterprise document generation with 202k context. Function calling supported. Served only by zero-data-retention providers. Does not support web search or image input. |
| GLM 5.2 | 2 premium requests | Z.ai's GLM-5.2 via the Vercel AI Gateway: flagship agentic engineering and coding with a 1M-token context window. Function calling supported. Uses 2 premium requests per send before length multipliers. Does not support web search or image input. |