---
title: "GPT-6 Luna"
type: entity
entity_type: model
url: https://frontiernewswire.com/models/gpt-6-luna-model
updated: 2026-10-20T01:45:01.000Z
---

# GPT-6 Luna

Canonical: https://frontiernewswire.com/models/gpt-6-luna-model

- **Type:** Model
- **Signals:** 7
- **First seen:** Sep 22, 2026
- **Last seen:** Oct 19, 2026

## Recent signals

- [Inception debuts Mercury 3, a diffusion LLM that it says tops GPT-6 Luna, Claude Haiku 5.5, and GLM-5.3 Flash on agentic benchmarks while being 4x to 8x faster (Jason Hiner/The Deep View)](https://frontiernewswire.com/s/inception-debuts-mercury-3-a-diffusion-llm-that-it-says-tops-gpt-6-f5fc1d29) (Oct 19, 2026)
- [OpenAI says GPT-6 in ChatGPT's Chat tab is powered by GPT-6 Sol for Plus, Pro, Business, and Enterprise tiers and GPT-6 Luna for Free and Go tiers (@openai)](https://frontiernewswire.com/s/openai-says-gpt-6-in-chatgpts-chat-tab-is-powered-by-gpt-6-sol-for-dbe78cd6) (Oct 7, 2026)
- [Anthropic cuts Sonnet 5.5 cache read price from $0.20 to $0.10 and adds monthly API credits: $100 for Max 5x, $200 for Max 20x, up to $500 shared by Team users (Carl Franzen/VentureBeat)](https://frontiernewswire.com/s/anthropic-cuts-sonnet-5-5-cache-read-price-from-0-20-to-0-10-and-adds-ce7bf5c6) (Oct 7, 2026)
- [Fixed a bug in image encoding that degraded image understanding in GPT-6 Sol and GPT-6 Luna. This update improves results on visual tasks in the API and Codex, including compute…](https://frontiernewswire.com/s/fixed-a-bug-in-image-encoding-that-degraded-image-understanding-in-gpt-76457bee) (Sep 24, 2026)
- [GPT-6 Sol costs $2/1M input and $10/1M output tokens, and GPT-6 Luna costs $0.10/1M input and $0.50/1M output tokens, both about 50% cheaper than GPT-5.6 (Nat Rubio-Licht/The Deep View)](https://frontiernewswire.com/s/gpt-6-sol-costs-2-1m-input-and-10-1m-output-tokens-and-gpt-6-luna-fdbfd737) (Sep 22, 2026)
- [Introducing GPT-6 Sol and Luna](https://frontiernewswire.com/s/introducing-gpt-6-sol-and-luna-20cc9b5c) (Sep 22, 2026)
- [OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes](https://frontiernewswire.com/s/openai-launches-gpt-6-sol-and-luna-boasting-lower-cost-and-fewer-a48c23f4) (Sep 22, 2026)

## Related

- [OpenAI](https://frontiernewswire.com/companies/openai) (Company)
- [GPT-6 Sol](https://frontiernewswire.com/models/gpt-6-sol) (Model)
- [GPT-5.6](https://frontiernewswire.com/models/gpt-5-6) (Model)
- [Astra](https://frontiernewswire.com/models/astra) (Model)
- [Claude Haiku 5.5](https://frontiernewswire.com/models/claude-haiku-5-5) (Model)
- [GPT-6](https://frontiernewswire.com/models/gpt-6) (Model)
- [Anthropic](https://frontiernewswire.com/companies/anthropic) (Company)
- [OpenAI Codex](https://frontiernewswire.com/models/openai-codex) (Model)

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