模型候選名單

Best long-context model APIs for large documents

Compare long-context model APIs by window size, price, source, and when a big context is actually worth paying for.

這份候選名單適合什麼用途?: Long-context models

Long context helps when you stuff contracts, exports, support history, or large files into the prompt. It also makes bills jump. Compare window size and input price together, and decide whether retrieval would be cheaper than stuffing the whole document every time.

來源依據: NextModel curated catalog and OpenRouter context 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 (Long-context models)

  1. 对照任务选模型. 先看「Long-context 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。

上下文长度

推薦候選 long-context 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。

OpenAICatalogHealthytypical

GPT-6 Astra via NextModel: 1.1M-token context; Starting at $10 / 1M tokens in / $50 / 1M tokens out per 1M tokens. Capabilities: streaming, tool, json.

Starting at $10 / 1M tokensInput$50 / 1M tokensOutput1.1MContext
Best forimage understanding, multimodal chat
StreamingTool callingJSON modeVisionLong context
Platform curatedCurated and maintained in the NextModel catalog
View details
OpenAICatalogBlockedtypical

GPT-6.1 Sol via NextModel: 1.1M-token context; Starting at $2 / 1M tokens in / $10 / 1M tokens out per 1M tokens. Capabilities: streaming, tool, json.

Starting at $2 / 1M tokensInput$10 / 1M tokensOutput1.1MContext
Best forimage understanding, multimodal chat
StreamingTool callingJSON modeVisionLong context
Platform curatedCurated and maintained in the NextModel catalog
View details
AnthropicCatalogHealthytypical

Claude Fable 5.1 via NextModel: 1M-token context; $10 / 1M tokens in / $50 / 1M tokens out per 1M tokens. Capabilities: streaming, tool, json.

$10 / 1M tokensInput$50 / 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

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
GPT-6 Astraopenai/gpt-6-astraOpenAIStarting at $10 / 1M tokens$50 / 1M tokens1.1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat2408-7945msCatalogPlatform curated
GPT-6.1 Solopenai/gpt-6.1-solOpenAIStarting at $2 / 1M tokens$10 / 1M tokens1.1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat2489-8238msCatalogPlatform curated
Claude Fable 5.1anthropic/claude-fable-5.1Anthropic$10 / 1M tokens$50 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat3187-5152msCatalogPlatform 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 Opus 4.6anthropic/claude-opus-4.6Anthropic$5 / 1M tokens$25 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1930-4195msCatalogPlatform curated
Claude Opus 5.5anthropic/claude-opus-5.5Anthropic$4 / 1M tokens$20 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1845-5119msCatalogPlatform curated
Claude Sonnet 4.6anthropic/claude-sonnet-4.6Anthropic$3 / 1M tokens$15 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1306-1903msCatalogPlatform curated
Claude Sonnet 5.5anthropic/claude-sonnet-5.5Anthropic$2 / 1M tokens$10 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1230-2392msCatalogPlatform curated

常見問題

Long-context models 常見問題

Is a larger context window always better?

No. Bigger windows help with big inputs. Cost, latency, retrieval design, and answer quality still decide whether it is a good idea.

When should I use retrieval instead of a huge context window?

When most of the document is irrelevant to each question. Pull the useful chunks, send less context, and keep a smaller model if quality holds.

How do I estimate cost for long-context traffic?

Multiply average input tokens (including stuffed documents) by input price, then add output. Long inputs dominate the bill more often than people expect.

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