| Release | 2026-09-22 |
|---|
| Context | 1,050,000 tokens |
|---|
| Maximum output | 128,000 tokens |
|---|
| Inputs / output | Text and images / text |
|---|
| Access at launch | Responses API; Chat Completions API |
|---|
| API price (input / output) | USD 2 / 10 · 1M tokens |
|---|
Standard launch prices: prompts ≤272K input tokens, USD per 1M tokens. API limits are from the current model card; no comparable launch benchmark graph was established from these API docs. · source
| Field | Published value |
|---|---|
| Maker | OpenAI[1][2][3][4] |
| Release | 2026-09-22 |
| Context | 1,050,000 tokens |
| Maximum output | 128,000 tokens |
| Inputs / output | Text and images / text |
| Access at launch | Responses API; Chat Completions API |
| API price (input / output) | USD 0.10 / 0.50 · 1M tokens |
Standard launch prices: prompts ≤272K input tokens, USD per 1M tokens. API limits are from the current model card; no comparable launch benchmark graph was established from these API docs. · source
Estimate from the version's published specs, benchmarks and reviews, 0-5; scores are only comparable within one criteria year. Scored as launched (GPT-6 Sol, 22 Sep 2026; Luna shipped with it at $0.10/$0.50, index 37; this rubric is for Sol): Artificial Analysis Intelligence Index 48 at max effort (v4.3, AA launch article); Terminal-Bench 4.0 43% in AA's chart summary and 44% in its text, so coding takes about 43.5; 1.05M context; $2 in / $10 out per 1M = $4 blended (>272k input pays 2x); speed 103.5 tok/s on AA's current page (Capital & Compute cites 131 tok/s from AA, so speed could be 3.5); text+image input. Replaced by GPT-6.1 Sol seven days later. (A review whose quote could not be re-verified was dropped.)[2]
Intelligence Index and Coding Agent Index scores remain level with GPT-5.6, with progress in some evaluations and regressions in others
The independent aggregate favors Sol at every effort level, and Sol is measurably faster.
GPT-6 Sol and Luna are a pricing and reliability release more than an intelligence release.
| GPT-6 Sol and Luna push the cost efficiency frontier · Sep 22, 2026 | 0.80 |
|---|---|
| GPT-6 Sol and Luna: Pricing and Benchmarks · Sep 23, 2026 | 0.70 |
| How to Use GPT-6 Sol and Luna: Complete Guide to Benchmarks, Pricing and Tiers · Sep 23, 2026 | 0.70 |
Photos from readers, kept apart from the pin's sourced media. Rate what you ate or saw, and on a restaurant pin tag the dishes right on your photo.
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
OpenAI's[2][3][4] API changelog entry 'Sep 22' reads 'Released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna)'; TechCrunch[5] (2026-09-22T18:00Z) says the models 'are now available in ChatGPT Work and Codex' and OpenAI's X post the same day says they 'roll out today'.
OpenAI's[1][3][4] model page: 'built for complex coding and agentic workflows', 1,050,000 context window, 922,000 maximum input tokens, 128,000 max output tokens, Apr 20, 2026 knowledge cutoff, reasoning effort none to max, $2 input / $0.20 cached / $2.50 cache writes / $10 output per 1M tokens.
OpenAI's[1][2][4] model page: 'our most efficient model for focused, high-volume tasks', 1,050,000 context window, 128,000 max output tokens, May 18, 2026 knowledge cutoff, $0.10 input / $0.01 cached / $0.50 output per 1M tokens.
OpenAI's[1][2][3] own API changelog, entry 'Sep 22': 'Released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna)', reasoning models with text and image input and text output, priced per 1M tokens at '$2 input, $0.20 cached input, and $10 output' (Sol) and '$0.10 input, $0.01 cached input, and $0.50 output' (Luna); a 'Sep 25' entry fixes an image-encoding bug that had degraded their image understanding.
TechCrunch's same-day report (2026-09-22T18:00Z): the 6-series models cost half as much as GPT-5.6 Sol and Luna thanks to caching and inference gains, Sol makes 'about half as many mistakes as its predecessor', Anthropic's Opus 5.5 came out 90 minutes earlier, and the models 'are now available in ChatGPT Work and Codex for most paid accounts'.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most. A picture that shows something else, or shows it badly, is looked at too, and moved down or replaced.
gpt-6-sol and gpt-6-luna and started rolling out in ChatGPT Work and Codex for paid plans, with Free and Go users able to try Luna in the desktop app[1][4][5][6]