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API capability - Structured outputs

AI models with structured outputs

97 of the 167 models in the registry have structured outputs, according to each provider's own docs. The cheapest by output price is Ministral 3 3B from Mistral AI at $0.10 per 1M output tokens. The largest context window among them is 1.05M tokens, on GPT-6 Luna.

Capabilities checked . Sources

Models with Yes
97 of 167
Lowest output / 1M
$0.10
Largest context
1.05M
Not stated
14

Every model with structured outputs, cheapest first

Models with structured outputs, sorted by output price, with input and output price per 1M tokens, context window and the provider doc page that states it.
ModelProviderInput / 1MOutput / 1MContextSource
Ministral 3 3BMistral AI$0.10$0.10256Kdocs.mistral.ai
Qwen3.7-FlashAlibaba Cloud (Qwen)$0.03$0.131Malibabacloud.com
Ministral 3 8BMistral AI$0.15$0.15256Kdocs.mistral.ai
Ministral 3 14BMistral AI$0.20$0.20256Kdocs.mistral.ai
Step 3.5 FlashStepFun$0.10$0.30256Kplatform.stepfun.ai
Step 3.5 Flash 2603StepFun$0.10$0.30256Kplatform.stepfun.ai
GPT-5 nanoOpenAI$0.05$0.40400Kdevelopers.openai.com
Gemini 2.5 Flash-LiteGoogle$0.10$0.401.05Mai.google.dev
GPT-4.1 nanoOpenAI$0.10$0.401.05Mdevelopers.openai.com
Seed 2.0 MiniByteDance Seed$0.10$0.40256Kdocs.byteplus.com
Qwen3.8-FlashAlibaba Cloud (Qwen)$0.15$0.471Malibabacloud.com
Claude Haiku 5.5Anthropic$0.10$0.501Mplatform.claude.com
GPT-6 LunaOpenAI$0.10$0.501.05Mdevelopers.openai.com
Hy3Tencent$0.132$0.528256Ktencentcloud.com
Command R 08-2024Cohere$0.15$0.60128Kdocs.cohere.com
GPT-4o MiniOpenAI$0.15$0.60128Kdevelopers.openai.com
Mistral Small 4Mistral AI$0.15$0.60256Kdocs.mistral.ai
Mercury 2.5Inception$0.20$0.75260Kdocs.inceptionlabs.ai
Mercury 2Inception$0.25$0.75128Kdocs.inceptionlabs.ai
Codestral 25.08Mistral AI$0.30$0.90128Kdocs.mistral.ai
Step 3.7 FlashStepFun$0.20$1.15256Kplatform.stepfun.ai
GPT-5.6 LunaOpenAI$0.20$1.201.05Mdevelopers.openai.com
GPT-5.4 nanoOpenAI$0.20$1.25400Kdevelopers.openai.com
Gemini 3.1 Flash-LiteGoogle$0.25$1.501.05Mai.google.dev
Mistral Large 3Mistral AI$0.50$1.50256Kdocs.mistral.ai
GPT-4.1 MiniOpenAI$0.40$1.601.05Mdevelopers.openai.com
Qwen3.7-PlusAlibaba Cloud (Qwen)$0.40$1.601Malibabacloud.com
GPT-5 MiniOpenAI$0.25$2400Kdevelopers.openai.com
Seed 2.0 LiteByteDance Seed$0.25$2256Kdocs.byteplus.com
Grok Build 0.1xAI$1$2256Kdocs.x.ai
Gemini 2.5 FlashGoogle$0.30$2.501.05Mai.google.dev
Gemini 3.5 Flash-LiteGoogle$0.30$2.501.05Mai.google.dev
Dola Seed 2.1 TurboByteDance Seed$0.50$2.50256Kdocs.byteplus.com
Grok 4.20xAI$1.25$2.501Mdocs.x.ai
Grok 4.20 (Non-Reasoning)xAI$1.25$2.501Mdocs.x.ai
Grok 4.20 Multi-Agent BetaxAI$1.25$2.501Mdocs.x.ai
Grok 4.3xAI$1.25$2.501Mdocs.x.ai
Hy4 previewTencent$0.834$2.5011Mtencentcloud.com
Step 5 PreviewStepFun$1$2.701Mplatform.stepfun.ai
Gemini 3 Flash PreviewGoogle$0.50$31.05Mai.google.dev
Gemini 3.6 FlashGoogle$0.75$3.751.05Mai.google.dev
Gemini 3.8 FlashGoogle$0.75$3.751.05Mai.google.dev
Kimi K2.6Moonshot AI$0.95$4262Kplatform.kimi.ai
Kimi K2.7 CodeMoonshot AI$0.95$4262Kplatform.kimi.ai
Mistral Large 4Mistral AI$1.36$4.181Mdocs.mistral.ai
o3-miniOpenAI$1.10$4.40200Kdevelopers.openai.com
o4-miniOpenAI$1.10$4.40200Kdevelopers.openai.com
GPT-5.4 MiniOpenAI$0.75$4.50400Kdevelopers.openai.com
Claude Haiku 4.5Anthropic$1$5200Kplatform.claude.com
Gemini Robotics ER 2 PreviewGoogle$1$5131Kai.google.dev
Grok 4.5xAI$2$6500Kdocs.x.ai
Grok 4.6xAI$2$6500Kdocs.x.ai
Grok 4.7xAI$2$6500Kdocs.x.ai
Qwen3.8-MaxAlibaba Cloud (Qwen)$2$61Malibabacloud.com
Mistral Medium 3.5Mistral AI$1.50$7.50256Kdocs.mistral.ai
Qwen3.7-MaxAlibaba Cloud (Qwen)$2.50$7.501Malibabacloud.com
GPT-4.1OpenAI$2$81.05Mdevelopers.openai.com
o3OpenAI$2$8200Kdevelopers.openai.com
Gemini 2.5 ProGoogle$1.25$101.05Mai.google.dev
GPT-5OpenAI$1.25$10400Kdevelopers.openai.com
GPT-5.1OpenAI$1.25$10400Kdevelopers.openai.com
Claude Sonnet 5Anthropic$2$101Mplatform.claude.com
Claude Sonnet 5.5Anthropic$2$101Mplatform.claude.com
Gemini 4 ArgonGoogle$2$101.05Mai.google.dev
GPT-6 SolOpenAI$2$101.05Mdevelopers.openai.com
GPT-6.1 SolOpenAI$2$101.05Mdevelopers.openai.com
Command ACohere$2.50$10256Kdocs.cohere.com
Command R+ 08-2024Cohere$2.50$10128Kdocs.cohere.com
GPT-4oOpenAI$2.50$10128Kdevelopers.openai.com
Gemini 3.1 Pro PreviewGoogle$2$121.05Mai.google.dev
GPT-5.6 TerraOpenAI$2$121.05Mdevelopers.openai.com
GPT-5.2OpenAI$1.75$14400Kdevelopers.openai.com
GPT-5.3-CodexOpenAI$1.75$14400Kdevelopers.openai.com
GPT-5.4OpenAI$2.50$151.05Mdevelopers.openai.com
Claude Sonnet 4.5Anthropic$3$15200Kplatform.claude.com
Claude Sonnet 4.6Anthropic$3$151Mplatform.claude.com
Kimi K3Moonshot AI$3$151.05Mplatform.kimi.ai
Claude Opus 5.5Anthropic$4$201Mplatform.claude.com
GPT-5.6 SolOpenAI$4$201.05Mdevelopers.openai.com
Claude Opus 4.5Anthropic$5$25200Kplatform.claude.com
Claude Opus 4.6Anthropic$5$251Mplatform.claude.com
Claude Opus 4.7Anthropic$5$251Mplatform.claude.com
Claude Opus 4.8Anthropic$5$251Mplatform.claude.com
Claude Opus 5Anthropic$5$251Mplatform.claude.com
Chat LatestOpenAI$5$30400Kdevelopers.openai.com
GPT-5.5OpenAI$5$301.05Mdevelopers.openai.com
Claude Fable 5Anthropic$10$501Mplatform.claude.com
Claude Fable 5.1Anthropic$10$501Mplatform.claude.com
Claude Mythos 5Anthropic$10$501Mplatform.claude.com
Claude Mythos 5.1Anthropic$10$501Mplatform.claude.com
GPT-6 AstraOpenAI$10$501.05Mdevelopers.openai.com
o1OpenAI$15$60200Kdevelopers.openai.com
GPT-5.6 CyberOpenAI$12.50$75400Kdevelopers.openai.com
o3-proOpenAI$20$80200Kdevelopers.openai.com
GPT-5 ProOpenAI$15$120400Kdevelopers.openai.com
GPT-5.5 ProOpenAI$30$1801.05Mdevelopers.openai.com
o1-proOpenAI$150$600200Kdevelopers.openai.com

Prices in USD per 1M tokens at the standard rate, sorted by output price. 56 models are documented without it, and for 14 models the provider's docs do not say (Not stated).

FAQ

What is the cheapest model with structured outputs?

Ministral 3 3B from Mistral AI is the cheapest model with structured outputs in the registry as of October 18, 2026, at $0.10 per 1M input tokens and $0.10 per 1M output tokens on the provider's own API.

Which model with structured outputs has the largest context window?

GPT-6 Luna from OpenAI has the largest context window among models with structured outputs: 1.05M tokens, at $0.50 per 1M output tokens.

How many AI models have structured outputs?

97 of the 167 models in the registry have structured outputs. 56 models do not, and for 14 models the provider's docs do not say either way.

What counts as structured outputs?

The API enforces a JSON schema you supply, so the response matches it. A plain JSON mode that only promises valid JSON does not count. Each Yes on this page links to the provider's own documentation page that states it.

Sources

Every Yes links to the provider doc page that states it, checked on . Prices and context windows come from each model's pricing page; open a model for its rate card and pricing sources.

Documentation pages read (70)

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