GPT-6 Sol
OpenAI · released Sep 22, 2026
- Type
- Closed
- Input
- $2.00
- Output
- $10.00
- Cached
- $0.20
List price · per 1M tokens · OpenAI at 922K context · machine-readable source ↗
Our take
Written Sep 29, 2026GPT-6 Sol is a hosted-only model released in September 2026, and its measured strengths sit in agentic work rather than general chat. It ranks first of 55 on Arena Agent · Steerability via Max as of 25 Sep 2026, while its general chat placing is mid-field.
Pick it for agentic work where following instructions and changing course matter more than raw chat quality, or for data analysis and table work, where it ranks near the top of the LiveBench field. It takes text, images and files, and long documents go in without splitting them up first. Skip it if you need to run the model yourself, since we list no download for it.
The case for it
- 1st of 55 on Arena Agent · Steerability via Max as of 25 Sep 2026, a board that records how well a model does what it was asked and adjusts when redirected.
- 3rd of 58 on LiveBench Data Analysis via Max as of 25 Jun 2026, a board covering table and event-ordering tasks.
- Request capacity leaves room for long documents in a single request, though reliable recall across all of it is unverified in our data.
The case against it
- 39th of 168 on Arena Text (overall) via Max as of 25 Sep 2026, a board that records which answer people preferred rather than whether it was correct.
- 30th of 58 on LiveBench Instruction Following via Max as of 25 Jun 2026, a board of constrained-rewriting tasks.
- We list no download for it, so using it means choosing a host.
How good is it?
A closed text model for everyday questions, writing, coding and multi-step agent work.
- getting answers to everyday questionsArena Text (overall) · 39th of 168
- drafts, rewrites and editingArena Creative Writing · 25th of 168
- writing and completing codeArena Coding · 19th of 168
- multi-step work it carries out for youArena Agent · 5th of 55
- calling tools to carry out requestsArena Agent · Tool use · 9th of 55
- changing course when you give new instructionsArena Agent · Steerability · 1st of 55
- getting back on track after a step failsArena Agent · Recovery · 6th of 55
EverydayGeneral questions and everyday reasoning
Arena Text (overall)39th of 168 · 1457
CodingWriting and fixing code on its own
Arena Coding19th of 168 · 1524
AgenticPlanning, calling tools, staying on task
Arena Agent5th of 55 · 0.077
WritingDrafting and rewriting prose
Arena Creative Writing25th of 168 · 1451
Placings on Arena's agent boards, from live sessions people ran themselves. A model can lead on one of these and sit mid-field on the others.
Boards this model appears on that none of the ratings above are built on.
Every published score for this model20 scoresEvery figure we hold, from 20 boards, with who ran it and a link to the source — including the boards no rating above is built on.
Where to rent it
Prices checked 4 hours ago — each listing carries its own date.
Microsoft Azure AI, through OpenRouter
Why this differs from the header. The strip above quotes OpenAI's own list price; this is the cheapest live offer, whoever is serving it — a reseller undercutting a lab is ordinary commerce, not an error.
- per 1M tokens
- $2.00 in / $10.00 out
- Context served
- 1.1M
- Throughput
- ~30 tok/s
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenAIflex tierThrough OpenRouter | $1.00 / $5.00checked 4 hours ago | 1.1M128K max reply | 52 tok/s | No | Yesunknown period | Unknown |
| Microsoft Azure AIThrough OpenRouter | $2.00 / $10.00checked 4 hours ago | 1.1M128K max reply | 30 tok/s | No | No | Confirmed |
| OpenRouterOpenRouter's own listing | $2.00 / $10.00checked 4 hours ago | 1.1M | not measured | Unknown | Unknown | Unknown |
| OpenAIDirect | $2.00 / $10.00checked 4 hours ago | 922K128K max reply | 50 tok/s | No | Yesunknown period | Unknown |
| Amazon Bedrockus-east-1Through OpenRouter | $2.20 / $11.00checked 4 hours ago | 1.1M128K max reply | 81 tok/s | No | No | Unknown |
| Microsoft Azure AIeuThrough OpenRouter | $2.20 / $11.00checked 4 hours ago | 1.1M128K max reply | 45 tok/s | No | No | Confirmed |
| Microsoft Azure AIusThrough OpenRouter | $2.20 / $11.00checked 4 hours ago | 1.1M128K max reply | 21 tok/s | No | No | Confirmed |
| OpenAIfast tierThrough OpenRouter | $4.00 / $20.00checked 4 hours ago | 1.1M128K max reply | 76 tok/s | No | Yesunknown period | Unknown |
OpenRouter
Amazon BedrockAcross the 8 listings we hold: 7 say they do not train on prompts, 0 say they do and 1 does not say. 3 appear in the zero-retention registry we check; the rest are unknown to us.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenAIflexThrough OpenRouter | ✓ | ✓ | ✓ |
| Microsoft Azure AIThrough OpenRouter | ✓ | ✓ | ✓ |
| OpenRouterOpenRouter's own listing | ✓ | ✓ | ✓ |
| OpenAIDirect | ✓ | ✓ | ✓ |
| Amazon Bedrockus-east-1Through OpenRouter | ✓ | ✓ | ✓ |
| Microsoft Azure AIeuThrough OpenRouter | ✓ | ✓ | ✓ |
| Microsoft Azure AIusThrough OpenRouter | ✓ | ✓ | ✓ |
| OpenAIfastThrough OpenRouter | ✓ | ✓ | ✓ |
Tool calling: 8 of 8 listings say yes. JSON output: 8 of 8 listings say yes. Strict schema: 8 of 8 listings say yes.
Models people weigh against GPT-6 Sol
When we formed this view
Recent changes
What moved
first indexed by our pipelineEach date is the day we first saw the change, or the day the maker announced it.
What we do not know about this model yet
- Nothing we hold says whether an endpoint streams, so we do not show it either way.
- 1 of 8 listings does not say whether it trains on prompts.
- We hold no batch or off-peak rate for any of its listings.
Licence and identifiers
What the licence allowsWe hold no licence record for this model. Inside are the identifiers you need to pull it — its Hugging Face repo where we have one, our slug and a machine-readable card.
Licence
We hold no licence record for this model, and no record of published weights either — so we can neither summarise its terms nor point you at the weights.
Identifiers
- Takes in, gives back
- Text, images and documents in, text out
- Catalogue slug
- openai-gpt-6-sol