Top Zero Data Retention Reasoning Long-Context AI Models
The best zero data retention reasoning long-context AI models right now, ranked and compared on price, context window and features. 73 models match. These are models offered by at least one provider with zero data retention, meaning your prompts and replies are not stored or used for training, and models that think step by step before answering, and models with a context window of 1 million tokens or more, enough for several books at once.
- Claude Opus 5.5
Anthropic · 1M context · ZDR · Images · Reasoning · Tools
$4.00 in
$20.00 out - Claude Sonnet 5.5
Anthropic · 1M context · ZDR · Images · Reasoning · Tools
$2.00 in
$10.00 out - Kimi K3.1 Pro
Moonshot · 1.05M context · ZDR · Images · Reasoning · Tools
$2.00 in
$10.00 out - GPT-6 Astra
OpenAI · 1.05M context · ZDR · Images · Reasoning · Tools
$10.00 in
$50.00 out - Gemini 4 Argon
Google · 1.05M context · ZDR · Images · Reasoning · Tools
$2.00 in
$10.00 out - GPT-6.1 Sol
OpenAI · 1.05M context · ZDR · Images · Reasoning · Tools
$2.00 in
$10.00 out - Claude Opus 5
Anthropic · 1M context · ZDR · Images · Reasoning · Tools
$5.00 in
$25.00 out - GPT-6.1 Terra
OpenAI · 1.05M context · ZDR · Images · Reasoning · Tools
$1.00 in
$5.00 out - GPT-6 Sol
OpenAI · 1.05M context · ZDR · Images · Reasoning · Tools
$2.00 in
$10.00 out - GPT-5.6 Sol
OpenAI · 1.05M context · ZDR · Images · Reasoning · Tools
$4.00 in
$20.00 out - MiMo-V2.6-Pro
Xiaomi · 1.05M context · ZDR · Images · Reasoning · Tools
$0.435 in
$0.870 out - GLM 5.3
Z.ai · 1.05M context · ZDR · Reasoning · Tools
$0.070 in
$1.40 out - Step 5 Preview
Stepfun · 1.05M context · ZDR · Images · Reasoning · Tools
$1.00 in
$2.70 out - Kimi K3
Moonshot · 1.05M context · ZDR · Images · Reasoning · Tools
$0.200 in
$11.50 out - Claude Haiku 5.5
Anthropic · 1M context · ZDR · Images · Reasoning · Tools
$0.100 in
$0.500 out - MiniMax M3.1 Flash
MiniMax · 1.05M context · ZDR · Images · Reasoning · Tools
$0.150 in
$0.600 out - GPT-5.6 Terra
OpenAI · 1.05M context · ZDR · Images · Reasoning · Tools
$2.00 in
$12.00 out - GLM 5.3 Flash
Z.ai · 1.05M context · ZDR · Images · Reasoning · Tools
$0.150 in
$0.500 out - Claude Opus 4.8
Anthropic · 1M context · ZDR · Images · Reasoning · Tools
$5.00 in
$25.00 out - Gemini 3.8 Flash
Google · 1.05M context · ZDR · Images · Reasoning · Tools
$0.825 in
$4.13 out - Claude Opus 4.7
Anthropic · 1M context · ZDR · Images · Reasoning · Tools
$5.00 in
$25.00 out - Qwen3.8 2.4T A95B
Qwen · 1.05M context · ZDR · Reasoning · Tools
$2.00 in
$6.00 out - Gemini 3.7 Flash
Google · 1.05M context · ZDR · Images · Reasoning · Tools
$0.750 in
$3.75 out - DeepSeek V4.1 Flash 1017
DeepSeek · 1.05M context · ZDR · Images · Reasoning · Tools
$0.300 in
$1.20 out - GPT-5.4
OpenAI · 1.05M context · ZDR · Images · Reasoning · Tools
$2.50 in
$15.00 out
Prices are per 1M tokens. Ranked by intelligence score where available, then newest.