OpenAI: GPT-5.6 Luna
Released Jul 9, 2026Try it on:
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...
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Pricing
Per token
- Input (per 1M)
- $1.00
- Output (per 1M)
- $6.00
- Cache Read (per 1M)
- $0.100
- Cache Write (per 1M)
- $1.25
Per unit
- Web search
- $0.010/call
Capabilities
Modality
text+image+file->textContext
1.1M tokens
Tokenizer
GPT
Knowledge cutoff
2026-02-16
Max output
128K tokens
Moderation
Moderated
Supported parameters
include_reasoning
max_completion_tokens
max_tokens
reasoning
reasoning_effort
response_format
seed
structured_outputs
tool_choice
tools
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