GPT-6 Sol
GPT‑6 Sol is an OpenAI‑released large language model in the GPT‑6 family, launched alongside a Luna variant in early October 2026. The coverage notes its inclusion in Amazon Bedrock’s cross‑region inference, its use in Robinhood trading agents, and its performance in benchmarks where a later GPT‑6.1 Sol upgrade approaches Astra‑level coding at a fraction of the cost.
GPT-6 Sol is a language model from Microsoft, first covered on 16 September 2026. It is available through an API. Its context window is 1M tokens.
Last updated
Quick facts
- Who makes GPT-6 Sol?
- GPT-6 Sol is made by Microsoft. Microsoft news →
- When was GPT-6 Sol released?
- The first report of GPT-6 Sol's release that Digest AI covered was published on 16 September 2026. OpenAI launches GPT-6 Sol and Luna with 50% lower API prices →
- What type of model is GPT-6 Sol?
- GPT-6 Sol is a language model.
- What is GPT-6 Sol's context window?
- GPT-6 Sol's context window is 1M tokens.
- Where is GPT-6 Sol available?
- GPT-6 Sol is available through an API. openai.com/index/introducing-gpt-6-sol-and-luna ↗
Taken from the coverage, not from our own testing. A question is left out when none of the reports we read gave the answer. Tracked 2 times (new versions or re-launches). All tracked models →
35 stories about GPT-6 Sol
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Ai2 releases StateBench to test long-context state tracking in models
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Amazon reported third-quarter net sales of $201.9 billion, up 12% year over year, with operating income climbing 61% to $28.1 billion. AWS revenue grew 39% to $46.0 billion, reaching a $184 billion annualized run rate,…
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OpenAI and Anthropic cut AI model prices by up to 80% amid rising competition from open-weight models
OpenAI and Anthropic have reduced prices for their flagship AI models by as much as 80% over the past four months, driven by intensifying competition from cheaper open-weight models like those from DeepSeek and…
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OpenAI makes its Decisions API widely available using GPT-6 Luna
OpenAI announced the general availability of its Decisions API on October 22, 2026, powered by GPT-6 Luna and priced at $0.10 per million input tokens. The API provides bounded, typed responses—probability, selection,…
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OpenAI launches GPT-6 Sol and Luna with 50% lower API prices
OpenAI announced that its new GPT-6 Sol and GPT-6 Luna models are now accessible through the API, Codex, and ChatGPT Work. The two models are offered under the identifiers gpt-6-sol and gpt-6-luna. Pricing for both…
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Stack Overflow for Agents triples signups via ChatGPT plugin
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Artemis Security launches Orion-1 to detect and respond to cyberattacks autonomously
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Claude’s document tools move to free plan as Gemini cuts free-tier models
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Microsoft releases Decision-1 AI model starting at $0.042 per million input tokens
Microsoft Chief Executive Officer Satya Nadella announced the release of a new AI model called Microsoft-Decision-1 on Oct. 9. The model focuses on making rapid, narrow choices such as categorizing requests, sorting…
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OpenAI launches GPT-6.1 Sol with Astra-level coding at one-fifth the cost
OpenAI announced GPT-6.1 Sol on September 29, 2026, during its DevDay event. The model is an upgraded version of GPT-6 Sol, released about a week earlier, and OpenAI says it delivers performance approaching the…
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Amazon Bedrock adds global cross‑Region inference for OpenAI GPT‑6 models
Amazon Bedrock now supports global cross‑Region inference for OpenAI GPT‑6 Sol, Luna, and Astra across five Asia Pacific regions. The post explains how to enable source regions, configure IAM policies and service…
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Microsoft releases Microsoft-Decision-1, a Qwen3.5-9B-based scoring model
Microsoft has launched Microsoft-Decision-1, a specialized model designed for routing, classification, and agent control. Unlike standard language models that generate text, this tool returns calibrated probabilities…
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Third Moment Research runs 10,000 agents for 36+ hours with GPT-6
Third Moment Research, an AI lab, is operating 10,000 concurrent agents for autonomous research sessions lasting 36 to 48 hours. The company uses OpenAI’s GPT-6 Astra, GPT-6 Sol, GPT-6.1 Sol, and Codex to build a…
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GPT-6 with Intelligent UI rolls out to ChatGPT users
This feature allows the model to generate fully interactive user interfaces, including graphics, tappable buttons, forms, and charts, directly within the conversation. The format adapts to the user's question, such as…
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Anthropic releases Opus 5.5 and Sonnet 5.5; OpenAI launches GPT-6 Sol and Luna tiers
Anthropic released Opus 5.5 and Sonnet 5.5, with Opus 5.5 noted for lower prices, faster performance, strong benchmark results, a system card noting sandbox-tampering attempts, and expanded defender-focused…
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OpenAI releases GPT-6 Sol and Luna as two models, fires three employees
OpenAI announced the simultaneous launch of two GPT‑6 variants, Sol and Luna, on 2 October 2026. The company has not yet disclosed benchmark results, pricing, or API details, and the names are only speculated to…
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OpenAI halves ChatGPT Pro 200’s usage limit over API cuts
OpenAI resumed signups for its $200-a-month ChatGPT Pro 200 plan on October 2 but cut its usage limit to 10 times that of the $20 ChatGPT Plus plan, down from 20 times. Existing subscribers get a grace period and extra…
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OpenAI releases GPT-6.1 Sol, priced one-fifth of GPT-6 Astra
OpenAI announced the release of GPT‑6.1 Sol, an updated version of GPT‑6 Sol that aims to match the performance of GPT‑6 Astra in agentic coding and professional work. The company highlighted that the standard API text…
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LlamaIndex launches Extract v2.5 with higher accuracy and grounding
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GPT-6.1 Sol ranks second in Mahjong AI benchmark behind GPT-6 Astra
The article describes a Mahjong-based AI benchmark run by an individual using a self-made platform called RIICHI ORBIT. Six models were tested: GPT-6 Astra, GPT-6.1 Sol, GPT-6 Sol, GPT-6 Luna, Claude Fable 5.1, and…
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Robinhood rolls out trading agents to 29 million customers
Starting this week, Robinhood’s roughly 29 million customers can access trading agents powered by OpenAI and Anthropic models. Users can choose between models like OpenAI’s GPT-6 Luna, GPT-6 Sol, and Anthropic’s Opus…
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OpenAI launches GPT-6.1 Sol at one-fifth of Astra's price
OpenAI has released GPT-6.1 Sol, a new model positioned between GPT-6 Sol and its flagship GPT-6 Astra. The company states that GPT-6.1 Sol approaches Astra’s performance in agentic coding, computer use, and…
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OpenAI hosts DevDay 2026 in San Francisco
Simon Willison, a tech journalist, attended and live-blogged the keynote and other sessions. He noted he received a free ticket and a seat in the ‘creator’ area for the keynote. Willison mentioned using Claude Code for…
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OpenAI reopens $200 Pro plan and adds $500 Pro tier while cutting API credits in half
OpenAI is reopening its $200-per-month Pro plan to new sign-ups while reducing API credits per dollar by half, as reported by The Decoder and confirmed by OpenAI’s help documentation. The company also introduced a new…
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Anthropic releases Claude Sonnet 5.5, faster and more cost‑efficient model
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Author finds 'just right' prompt range speeds GPT-6 Luna High
A user tested GPT-6 Luna High’s PowerPoint creation speed and quality, starting with a 12-minute, 38-second run that missed template adherence and saved files correctly. After three prompt adjustments, the model…
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Artificial Analysis launches Cyber Index Alliance to benchmark AI agents on cyber defense
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AI model pricing drops 125x: $50 frontier vs $0.40 lightweight output costs
AI model pricing saw a dramatic collapse in September 2026, with output unit costs ranging from $50 per million tokens for top-tier models like GPT-6 Astra and Claude Fable 5.1 to just $0.40 for lightweight models such…
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Microsoft adds GPT-6 Sol, Luna and Astra to Foundry model lineup
Microsoft’s chief technology officer Mark Russinovich warned that today’s most critical single points of failure are often AI models or inference endpoints rather than traditional infrastructure. He said the usual…
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OpenAI adds GPT-6 Astra, Sol, Luna models and plugin access to ChatGPT Voice
OpenAI has updated ChatGPT Voice to run on its new GPT-6 Astra, Sol, and Luna models and enabled access to plugins like email, calendar, and Slack. The feature is now available globally in the latest app version and…
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Palantir CEO questions OpenAI IPO due to liability risks
Palantir CEO Alex Karp suggested frontier AI labs like OpenAI may never go public because of their potential for unlimited liability. In a September 17 interview on CNBC, Karp argued that government nationalization…
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OpenAI adds GPT-6 Sol and Luna models to ChatGPT and Codex
OpenAI announced two new GPT‑6 variants, Sol and Luna, expanding the GPT‑6 family that already includes Astra. Both models run on fewer tokens than the GPT‑5.6 versions they replace and are priced about 50% lower, with…
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