模型候選名單

Best agent model APIs for tool-calling workflows

Compare model APIs for agents that need tools, JSON mode, long context, and a budget you can live with.

這份候選名單適合什麼用途?: Agent models

Agent runs spit out a lot of tokens and burn money when tool loops go wrong. Before you wire one up, check tool calling, JSON reliability, context length, latency, and output price. Then set a budget so a bad loop cannot empty the account overnight.

來源依據: NextModel capability mapping and supported-parameter metadata when available. · 更新日期 2026-07-01

如何使用这份名单

如何使用这份名单 (Agent models)

  1. 对照任务选模型. 先看「Agent models」短名单是否覆盖你的真实任务,不要只比标价。
  2. 用同一批提示词试跑. 挑 2–3 个候选,用业务提示词对比质量与输出长度。
  3. 估算月费. 用价格页或成本计算器,按预计 token 量估算月度花费。
  4. 定兜底与预算. 定主模型、兜底模型,设项目预算后再接生产流量。

匹配分

推薦候選 agent models

先從候選名單開始,再以真實提示詞測試,並在接入生產路由前比較月度成本。

GoogleCatalogHealthytypical

‌Gemini 4 Argon via NextModel: 1M-token context; $2 / 1M tokens in / $10 / 1M tokens out per 1M tokens. Capabilities: streaming, tool, json.

$2 / 1M tokensInput$10 / 1M tokensOutput1MContext
Best forimage understanding, multimodal chat
StreamingTool callingJSON modeVisionLong context
Platform curatedCurated and maintained in the NextModel catalog
View details
AnthropicCatalogHealthyfast

Claude Haiku 5.5 via NextModel: 1M-token context; Starting at $0.1 / 1M tokens in / $0.5 / 1M tokens out per 1M tokens. Capabilities: streaming, tool, json.

Starting at $0.1 / 1M tokensInput$0.5 / 1M tokensOutput1MContext
Best forimage understanding, multimodal chat
StreamingTool callingJSON modeVisionLong context
Platform curatedCurated and maintained in the NextModel catalog
View details
AnthropicCatalogHealthyfast

Claude Sonnet 5.5 via NextModel: 1M-token context; $2 / 1M tokens in / $10 / 1M tokens out per 1M tokens. Capabilities: streaming, tool, json.

$2 / 1M tokensInput$10 / 1M tokensOutput1MContext
Best forimage understanding, multimodal chat
StreamingTool callingJSON modeVisionLong context
Platform curatedCurated and maintained in the NextModel catalog
View details
OpenAICatalogHealthytypical

GPT‑6 Luna via NextModel: 1M-token context; Starting at $0.1 / 1M tokens in / $0.5 / 1M tokens out per 1M tokens. Capabilities: streaming, tool, json.

Starting at $0.1 / 1M tokensInput$0.5 / 1M tokensOutput1MContext
Best forimage understanding, multimodal chat
StreamingTool callingJSON modeVisionLong context
Platform curatedCurated and maintained in the NextModel catalog
View details

比較表

按價格、提供方、上下文、能力與來源比較這份候選名單。

當你在縮小正式環境候選名單、建立兜底策略或比較模型經濟性時,可使用此視圖。

ModelProviderInputOutputContextCapabilitiesBest forLatencyStatusSource
‌Gemini 4 Argongoogle/gemini-4-argonGoogle$2 / 1M tokens$10 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat2974-10589msCatalogPlatform curated
Claude Haiku 5.5anthropic/claude-haiku-5.5AnthropicStarting at $0.1 / 1M tokens$0.5 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1321-2017msCatalogPlatform curated
Claude Sonnet 5.5anthropic/claude-sonnet-5.5Anthropic$2 / 1M tokens$10 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1230-2392msCatalogPlatform curated
GPT‑6 Lunaopenai/gpt-6-lunaOpenAIStarting at $0.1 / 1M tokens$0.5 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1722-2681msCatalogPlatform curated
GPT‑6 Solopenai/gpt-6-solOpenAIStarting at $2 / 1M tokens$10 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1752-3715msCatalogPlatform curated
Claude Opus 5.5anthropic/claude-opus-5.5Anthropic$4 / 1M tokens$20 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1845-5119msCatalogPlatform curated
GPT-6 Astraopenai/gpt-6-astraOpenAIStarting at $10 / 1M tokens$50 / 1M tokens1.1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat2408-7945msCatalogPlatform curated
Claude Fable 5.1anthropic/claude-fable-5.1Anthropic$10 / 1M tokens$50 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat3187-5152msCatalogPlatform curated

常見問題

Agent models 常見問題

Which capabilities matter most for agent models?

Tool calling, structured JSON, enough context for the task, and instructions that stick. Everything else is secondary.

Why do agent workflows get expensive so fast?

They generate long traces: planning text, tool results stuffed back into context, and retries. Cap steps and log token use per run.

Should agents always use the strongest model?

No. Route planning or simple tool picks to cheaper models when quality allows, and reserve stronger models for hard steps.