GPT-6.1 Sol
GPT-6.1 SolAlternatives?
OpenGLM 5.3 Flashmax-30%-61%$0.28Context: 1.05M → 1M+5Lower effortSame modelhigh-3%-56%$0.32
OpenDeepSeek V4 Pro 0813max-35%-7%$0.67Context: 1.05M → 1M+6
OpenKimi K3max-36%+176%$2.00Context: 1.05M → 1M+4
OpenQwen3.8 27Bxhigh-55%+39%$1.01Context: 1.05M → 262K+5GLM 5.3 FlashmaxOpen-30%-61%$0.28Context: 1.05M → 1M+5DeepSeek V4 Pro 0813maxOpen-35%-7%$0.67Context: 1.05M → 1M+6Kimi K3maxOpen-36%+176%$2.00Context: 1.05M → 1M+4Qwen3.8 27BxhighOpen-55%+39%$1.01Context: 1.05M → 262K+5TInkling SmallxhighOpen-57%-84%$0.45 / $1.20Context: 1.05M → 256K+1GPT-6 Astramaxsame+350%$3.26Monitoring can return HTTP 403+2GPT-5.6 Solmax-2%+175%$1.99GPT-6 Solmax-5%+44%$1.04GPT-5.5 Prohigh-10%—$30 / $180GPT-5.6 Terramax-11%+93%$1.40Prompts with >272K input tokensGPT-5.4 Proxhigh-12%—$30 / $180No strict JSONGPT-5.4xhigh-21%—$2.50 / $15GPT-5.5medium-25%+25%$0.90Prompts with >272K input tokensAll OpenAI models →History
3 versionsBenchmarks
in Chat & KnowledgeWatch out 6
Remove unsupported parameters›
With reasoning enabled, remove temperature, top_p and top_logprobs, plus Chat Completions logprobs or Responses message.output_text.logprobs includes. Source ↗
Responses API for tool calling · Chat Completions›
Use Responses for tools; Chat Completions supports this model without tool calling. Source ↗
No none or minimal reasoning›
The none and minimal reasoning efforts are unsupported; choose low, medium, high, xhigh or max. Source ↗
More than 272K input tokens›
Prompts above 272K input tokens charge 2× input and cache rates and 1.5× output rates for the entire request. Source ↗
Cache writes billed at 1.25x›
Cache writes cost 1.25× the uncached input token rate. Source ↗
Ultrafast prices 6x Standard›
Ultrafast mode costs 6× Standard token prices. Source ↗
FAQ
How much does GPT-6.1 Sol cost?›
$2 per 1M input tokens and $10 per 1M output tokens; cached input $0.10 per 1M. A typical benchmark task costs about $0.72 at max effort.
Is GPT-6.1 Sol free to use?›
There is no free API; the cheapest paid price is $2 per 1M input tokens.
How good is GPT-6.1 Sol, and what is it best at?›
#9 of 334 in Chat & Knowledge, #6 of 132 in Coding, #11 of 133 in Agents & Tool Use, #19 of 195 in Writing & Language, #3 of 124 in Vision & Documents. Strongest at: Coding, Agents & work tasks, Reasoning, Long context, Knowledge, Vision.
Is GPT-6.1 Sol better than GPT-6 Sol?›
On ARC-AGI-2 · semi-private, GPT-6.1 Sol scores 94.2 vs 89.6 — higher. It is 31% cheaper per task.
How can I use GPT-6.1 Sol?›
Through the API of Amazon Bedrock, Azure, OpenAI.
What is the context window of GPT-6.1 Sol?›
1.05M tokens, with up to 128K output tokens.
When was GPT-6.1 Sol released? Is there a newer version?›
Released 2026-09-29. It is the current version in its line.
Is GPT-6.1 Sol open source?›
No, GPT-6.1 Sol is a closed model available through an API. The closest open-weights option here is GLM 5.3 Flash.
Can GPT-6.1 Sol read images?›
It accepts text and images, PDF files as input.
What is GPT-6.1 Sol?›
GPT-6.1 Sol is a closed language model from OpenAI, released Sep 2026, the successor to GPT-6 Sol.
What are the best alternatives to GPT-6.1 Sol?›
GLM 5.3 Flash (open weights).