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AI Atlas
ModelActiveProprietary

gpt-5.6-luna

OpenAIdevelopers.openai.com/api/docs/models/gpt-5.6-lu

GPT-5.6 model optimized for cost-sensitive workloads

quality78

Updated 14 min ago · first seen 11 Sept 2026

model_01M293V76ZRTWE98GJGHREAFGX

Context
1.05M tokens
T1 · 32 min ago
Released
9 Jul 2026
T2 · 14 min ago
Knowledge cutoff
Feb 2026
T1 · 32 min ago

Specification

Release date
9 Jul 2026

Source:OpenRouter public model & pricing listingT2observed 14 min agomedium

Openness
proprietary

Source:OpenAI Platform docsT1observed 32 min agohigh

Context window
1.05M tokens

Source:OpenAI Platform docsT1observed 32 min agohigh

Max output
128K tokens

Source:OpenAI Platform docsT1observed 32 min agohigh

Knowledge cutoff
Feb 2026

Source:OpenAI Platform docsT1observed 32 min agohigh

Modalities
image, text

Source:OpenAI Platform docsT1observed 32 min agohigh

Input modalities
text, image

Source:OpenAI Platform docsT1observed 32 min agohigh

Output modalities
text

Source:OpenAI Platform docsT1observed 32 min agohigh

Tokenizer
GPT

Source:OpenRouter public model & pricing listingT2observed 14 min agomedium

API model id
gpt-5.6-luna

Source:OpenAI Platform docsT1observed 32 min agohigh

Official page

Source:OpenAI Platform docsT1observed 32 min agohigh

Capabilities
streaming, structured_outputs, function_calling, file_search, image_input, web_search, prompt_caching

Source:OpenAI Platform docsT1observed 32 min agohigh

Default snapshot
gpt-5.6-luna

Source:OpenAI Platform docsT1observed 32 min agohigh

File input
Yes

Source:OpenRouter public model & pricing listingT2observed 14 min agomedium

Openrouter id
openai/gpt-5.6-luna

Source:OpenRouter public model & pricing listingT2observed 14 min agomedium

Snapshots
gpt-5.6-luna

Source:OpenAI Platform docsT1observed 32 min agohigh

Supported parameters
include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools

Source:OpenRouter public model & pricing listingT2observed 14 min agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

23

Source tiers

T1T217 / 6

Freshest observation

14 min ago

Conflicts

1 flagged