GPT-5.1
GPT-5.1Alternatives?
CheaperGemini 3.8 Flashunstated×2.1-56%*$0.75 / $3.75Sampling parameters are ignored+1BetterGPT-6 Lunamax+19%-94%$0.068Function calling only with none · Chat Completions+3
OpenDeepSeek V4 Pro 0813max+52%-42%$0.67No image input+5CheaperGemini 3 Flash Previewhigh+91%-67%$0.50 / $3CheaperGemini 3.6 Flashhigh+90%-56%*$1.60Gemini 3.8 Flashunstated×2.1-56%*$0.75 / $3.75Sampling parameters are ignored+1Gemini 3 Flash Previewhigh+91%-67%$0.50 / $3Gemini 3.6 Flashhigh+90%-56%*$1.60
Muse Spark 1.2xhigh+73%-42%$1.29Only auto tool_choice is supported+1
Grok 4.7unstated+70%-13%$2 / $6Reasoning cannot be disabled+4GPT-6 Lunamax+19%-94%$0.068Function calling only with none · Chat Completions+3GPT-5.6 Lunamax+17%-87%$0.18DeepSeek V4.1 Flash 1017maxOpen+22%-85%$0.26Pass back reasoning_content · Chat Completions+4TInklingxhighOpen+15%-50%$0.60Context: 400K → 256K+1DeepSeek V4 Pro 0813maxOpen+52%-42%$0.67No image input+5DeepSeek V4 Pro 0813maxOpen+52%-42%$0.67No image input+5
Kimi K3maxOpen+45%+75%$2.00Sampling parameters are fixed+3DeepSeek V4.1 Flash 1017maxOpen+22%-85%$0.26Pass back reasoning_content · Chat Completions+4
GLM 5.3maxOpen+17%-37%$2.01No image input+4
Qwen3 235B A22B Thinking 2507unstatedOpen+16%-78%$0.23 / $2.30Context: 400K → 262K+2GPT-6 Astraunstated×2.2—$10 / $50Monitoring can return HTTP 403+2GPT-6.1 Solmax×2.1—$0.72Remove unsupported parameters+5GPT-5.6 Solmax+100%—$1.99GPT-6 Solunstated+85%—$2 / $10GPT-5.5xhigh+81%—$2.10Prompts with >272K input tokenso3unstated+50%—$2 / $8Context: 400K → 200KGPT-5 (2025-08-07)high+44%—$1.25 / $10o3 (2025-04-16)high+42%—$2 / $8Context: 400K → 200KAll OpenAI models →History
17 versionsBenchmarks
in Chat & KnowledgeFAQ
How much does GPT-5.1 cost?›
$1.25 per 1M input tokens and $10 per 1M output tokens; cached input $0.13 per 1M.
Is GPT-5.1 free to use?›
There is no free API; the cheapest paid price is $1.25 per 1M input tokens.
How good is GPT-5.1, and what is it best at?›
#266 of 336 in Chat & Knowledge, #72 of 97 in Coding, #139 of 177 in Agents & Tool Use, #42 of 197 in Writing & Language, #90 of 125 in Vision & Documents.
Is GPT-5.1 better than Kimi K2.6?›
On SimpleQA Verified v1, GPT-5.1 scores 34.9 vs 34.9 — about the same.
How can I use GPT-5.1?›
Through the API of Azure, OpenAI.
What is the context window of GPT-5.1?›
400K tokens, with up to 128K output tokens.
When was GPT-5.1 released? Is there a newer version?›
Released 2025-11-13. It has been superseded by GPT-6 Sol.
Is GPT-5.1 open source?›
No, GPT-5.1 is a closed model available through an API. The closest open-weights option here is DeepSeek V4 Pro 0813.
Can GPT-5.1 read images?›
It accepts text and images, PDF files as input.
What is GPT-5.1?›
GPT-5.1 is a closed language model from OpenAI, released Nov 2025.
What are the best alternatives to GPT-5.1?›
Gemini 3.8 Flash (cheaper), GPT-6 Luna (better), DeepSeek V4 Pro 0813 (open weights).