GPT-6 Sol at a glance
GPT-6 Sol targets coding and agentic work at $2/$10 per million tokens, while GPT-6 Luna serves high-volume tasks at $0.10/$0.50.
Current standing
As of
- Rank
- #11of 43 models
GPT-6 Sol (Max) · 44.2 on the Artificial Analysis Intelligence Index v5.0.1 (opens in a new tab)
- Recorded at publication
- 44 (v5.0.1)
as of
- Current leader
- Gemini 4 Carbon (Google) · 60
Computed from our daily snapshot; it changes as new models are measured. OpenAI releases GPT-6 Sol and GPT-6 Luna as lower-cost GPT-6 tiers
What changed with GPT-6 Sol
On September 22, 2026, OpenAI released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna), reasoning models that accept text and images through the Responses and Chat Completions APIs. Both have a context window of about 1.05M tokens.
Luna is OpenAI's most efficient model for focused, high-volume tasks, at $0.10 input and $0.50 output per million tokens; Artificial Analysis scores it 28 on Intelligence Index v5.0.1 at 105 tokens/s. GPT-6 Sol, priced at $2/$10, scored 44 at 111 tokens/s, but OpenAI already points Sol users to GPT-6.1 Sol, released a week later.
GPT-6 Sol benchmarks and pricing
Values are copied from the linked source on the date shown. They are not IA Compa measurements.
- Artificial Analysis Intelligence Index (Luna, max) · GPT-6 Lunaas of · Source for Artificial Analysis Intelligence Index (Luna, max): artificialanalysis.ai (opens in a new tab)
- 28 (v5.0.1)
- Output speed (Luna, max) · GPT-6 Lunaas of · Source for Output speed (Luna, max): artificialanalysis.ai (opens in a new tab)
- 105 tokens/s
- Input price per 1M tokens (Luna) · GPT-6 Lunaas of · Source for Input price per 1M tokens (Luna): developers.openai.com (opens in a new tab)
- $0.10
- Output price per 1M tokens (Luna) · GPT-6 Lunaas of · Source for Output price per 1M tokens (Luna): developers.openai.com (opens in a new tab)
- $0.50
- Artificial Analysis Intelligence Index (Sol, max)as of · Source for Artificial Analysis Intelligence Index (Sol, max): artificialanalysis.ai (opens in a new tab)
- 44 (v5.0.1)
- Output speed (Sol, max)as of · Source for Output speed (Sol, max): artificialanalysis.ai (opens in a new tab)
- 111 tokens/s
- Input price per 1M tokens (Sol)as of · Source for Input price per 1M tokens (Sol): developers.openai.com (opens in a new tab)
- $2.00
- Output price per 1M tokens (Sol)as of · Source for Output price per 1M tokens (Sol): developers.openai.com (opens in a new tab)
- $10.00
- Context windowas of · Source for Context window: developers.openai.com (opens in a new tab)
- 1.05M tokens
How it compares
Other models in the same category that we have covered, using each model's latest recorded value. (Models)
GPT-6 Sol and GPT-6 Luna reasoning effort
Artificial Analysis tests this model at several reasoning-effort settings. Higher effort usually scores higher but costs more and answers more slowly.
GPT-6 Sol by effort level
Higher effort lets the model think longer. Here is what each setting scores, how fast it writes, and what it costs on Artificial Analysis.
| Effort | Intelligence Index | Output speed (tokens per second) | Cost to run the index | Blended price (3:1) (per 1M tokens) | Price in / out (per 1M tokens) | First token |
|---|---|---|---|---|---|---|
| Max (GPT-6 Sol (max)) · Best: highest effort with a score, used in the leaderboard | 44 | 111 | $1,930 | $4 | $2 / $10 | 67 s |
| Extra high (GPT-6 Sol (xhigh)) | n/a | 113 | n/a | $4 | $2 / $10 | 23 s |
| High (GPT-6 Sol (high)) | n/a | 107 | n/a | $4 | $2 / $10 | 11 s |
| Medium (GPT-6 Sol (medium)) | n/a | n/a | n/a | $4 | $2 / $10 | n/a |
| Low (GPT-6 Sol (low)) | n/a | 92 | n/a | $4 | $2 / $10 | 2 s |
| No reasoning (GPT-6 Sol (non-reasoning)) | n/a | 107 | n/a | $4 | $2 / $10 | 1.2 s |
Benchmarked by AA: max · xhigh · high · medium · low · none of 7 available
GPT-6 Luna by effort level
Higher effort lets the model think longer. Here is what each setting scores, how fast it writes, and what it costs on Artificial Analysis.
| Effort | Intelligence Index | Output speed (tokens per second) | Cost to run the index | Blended price (3:1) (per 1M tokens) | Price in / out (per 1M tokens) | First token |
|---|---|---|---|---|---|---|
| Max (GPT-6 Luna (max)) · Best: highest effort with a score, used in the leaderboard | 28 | 105 | $136 | $0.20 | $0.10 / $0.50 | 102 s |
| Extra high (GPT-6 Luna (xhigh)) | 24 | 95 | $85.74 | $0.20 | $0.10 / $0.50 | 26 s |
| High (GPT-6 Luna (high)) | 21 | 95 | $62.58 | $0.20 | $0.10 / $0.50 | 14 s |
| Medium (GPT-6 Luna (medium)) | 19 | n/a | $39.55 | $0.20 | $0.10 / $0.50 | n/a |
| Low (GPT-6 Luna (low)) | 10 | 90 | $9.09 | $0.20 | $0.10 / $0.50 | 2.7 s |
| No reasoning (GPT-6 Luna (non-reasoning)) | 9 | 92 | $53.14 | $0.20 | $0.10 / $0.50 | 1.1 s |
Where to compare GPT-6 Sol
Independent leaderboards and official resources for comparing this model yourself. Rankings change often; each site shows its own current data.
Leaderboards
General leaderboards
Why GPT-6 Sol matters for businesses
Luna is the item to watch for small businesses: at one hundredth of Astra's input price, it is suited to classification, extraction, routing and routine customer replies at scale. Microsoft added Sol and Luna to Foundry the same day.
Sources for this story
- OpenAI API changelog (opens in a new tab)Official
OpenAI · developers.openai.com
- GPT-6 Luna model page (opens in a new tab)Official
OpenAI · developers.openai.com
- GPT-6 Sol model page (opens in a new tab)Official
OpenAI · developers.openai.com
- GPT-6 Astra, Sol, and Luna: For production agents in Microsoft Foundry (opens in a new tab)Official
Microsoft Azure Blog · azure.microsoft.com
- GPT-6 Luna model page (opens in a new tab)Benchmark
Artificial Analysis · artificialanalysis.ai
- GPT-6 Sol model page (opens in a new tab)Benchmark
Artificial Analysis · artificialanalysis.ai
Last verified: . IA Compa summarizes public announcements for business readers. We are not affiliated with the companies mentioned. Always confirm details, pricing, and availability with the official source.
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