Long-context AI models: 82 that hold a million tokens or more

Long context 1M+

Services found: 82

#	AI model	API $/1M (in / out)	Context window	Price / mo	Output $/1M	Overview
1	Claude Fable 5.1 Anthropic	$10 / $50	1M tokens	API only	50	View
2	GPT-6 Astra OpenAI	$10 / $50	1.05M tokens	API only	50	View
3	GPT-6.1 Sol OpenAI	$2 / $10	1.05M tokens	API only	10	View
4	GPT-6 Sol OpenAI	$2 / $10	1.05M tokens	API only	10	View
5	GPT-6 Luna OpenAI	$0.1 / $0.5	1.05M tokens	API only	0.5	View
6	Claude Opus 5.5 Anthropic	$4 / $20	1M tokens	API only	20	View
7	Claude Sonnet 5.5 Anthropic	$2 / $10	1M tokens	API only	10	View
8	DeepSeek V4.1 Flash DeepSeek	$0.3 / $1.2	1M tokens	API only	1.2	View
9	Qwen3.8 Max Prime Qwen	$3.36 / $10.08	1M tokens	API only	10.08	View
10	GLM 5.3 FlashX Z.ai	$0.37 / $1.25	1M tokens	API only	1.25	View
11	Ember-1 Fireworks AI	$3 / $15	1.04M tokens	API only	15	View
12	Claude Opus 5 Anthropic	$5 / $25	1M tokens	API only	25	View
13	Claude Fable 5 Anthropic	$10 / $50	1M tokens	API only	50	View
14	GPT-5.6 Sol OpenAI	$4 / $20	1.05M tokens	API only	20	View
15	GLM 5.3 Z.ai	$1.4 / $4.4	1.31M tokens	API only	4.4	View
16	Kimi K3 Moonshot AI	$3 / $15	1.05M tokens	API only	15	View
17	GPT-5.6 Terra OpenAI	$2 / $12	1.05M tokens	API only	12	View
18	Claude Opus 4.8 Anthropic	$5 / $25	1M tokens	API only	25	View
19	GLM 5.3 Flash Z.ai	$0.075 / $0.25	1.31M tokens	API only	0.25	View
20	Gemini 3.8 Flash Google	$0.75 / $3.75	1.05M tokens	API only	3.75	View

Browse by need

Reasoning models169 models

Coding assistants17 models

Vision and images156 models

Long context 1M+82 models

Free tier available80 models

Open weights88 models

Eighty-eight models hold a million tokens or more in a single conversation - roughly 750,000 words, or an entire codebase, a full contract bundle, a multi-hour transcript. Qwen-Long stretches furthest at 10M tokens.

Long context is not free in either sense. Several vendors charge more above a threshold - Gemini 3.1 Pro doubles from $2 to $4 on input past 200K tokens. Attention quality also degrades across very long inputs, so retrieval over a well-built index often beats pasting everything in. Lean on prompt caching when the same document is queried repeatedly.

Bigger is not smarterAttention thins out across very long inputs on every model available today.

Thresholds cost moneySeveral vendors raise the rate above 200K tokens, doubling input price mid-request.

Retrieval still winsA good index usually beats pasting the whole corpus, at a fraction of the cost.

Models with this capability

The 82 models below all support this capability. Prices are input and output per 1M tokens from the vendor official price list; for dirhams multiply by 3.6725. Tap a card to open the model page.

Claude Fable 5.1

Anthropic

in $10out $501M tokens

GPT-6 Astra

OpenAI

in $10out $501.05M tokens

GPT-6.1 Sol

OpenAI

in $2out $101.05M tokens

GPT-6 Sol

OpenAI

in $2out $101.05M tokens

GPT-6 Luna

OpenAI

in $0.1out $0.51.05M tokens

Claude Opus 5.5

Anthropic

in $4out $201M tokens

Claude Sonnet 5.5

Anthropic

in $2out $101M tokens

DeepSeek V4.1 Flash

DeepSeek

in $0.3out $1.21M tokens

How to choose

Use the full window when the material must be seen at once — not as a substitute for retrieval.
Watch for price tiers above 200K and budget accordingly.
Combine with caching when the same long document is queried repeatedly.
Check the maximum output separately; a big input window does not imply a big answer.

Common mistakes

Pasting everything by defaultMost questions need a fraction of the context and answer better without the noise.

Ignoring the output ceilingLong analyses hit max output limits well before the input window fills.

Who this suits

Legal and complianceContract bundles and regulatory texts read in one pass.

EngineeringRepository-scale refactors where cross-file context matters.

MediaMulti-hour transcripts summarised without chunking.

Related filters

Prompt caching147 models with cheap repeated context

Vision156 models that read images

Reasoning169 models that think before answering

Frontier tier41 flagship models, the best each vendor sells

All 239 modelsThe full rating with filters and prices

Frequently asked questions

Is a bigger window always better?

No. Attention quality degrades across very long inputs, and retrieval over a good index often beats pasting everything in.

Does long context cost extra?

Often. Gemini 3.1 Pro doubles input from $2 to $4 above 200K tokens, and several vendors have similar thresholds.

What is the largest window available?

Qwen-Long at 10M tokens. Most current flagships sit at 1M.

What is the largest window on the market?

Qwen-Long at 10M tokens. Most flagships sit at 1M.

Does long context slow responses?

Yes, materially. Time to first token grows with input size.

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