GPT-5.5
GPT-5.5Alternatives?
CheaperMiniMax M3.1 Flashthinking+64%-86%$0.22Context: 1.05M → 1M+1BetterGPT-6 Lunahigh+8%-98%$0.029Function calling only with none · Chat Completions+3
OpenDeepSeek V4.1 Flash 1017max+50%-83%$0.26Context: 1.05M → 1M+5Lower effortSame modelmedium-10%-41%$0.90CheaperGPT-6.1 Solxhigh+50%-75%$0.39Remove unsupported parameters+5MiniMax M3.1 Flashthinking+64%-86%$0.22Context: 1.05M → 1M+1DeepSeek V4.1 Flash 1017maxOpen+50%-83%$0.26Context: 1.05M → 1M+5GPT-6.1 Solxhigh+50%-75%$0.39Remove unsupported parameters+5
MiMo v2.6 FlashthinkingOpen+44%-96%$0.062Context: 1.05M → 1M+4
Grok 4.6medium+42%-26%$1.14Context: 1.05M → 500KGPT-6 Lunahigh+8%-98%$0.029Function calling only with none · Chat Completions+3MiMo v2.6 FlashthinkingOpen+44%-96%$0.062Context: 1.05M → 1M+4GPT-6.1 Sollow+19%-92%$0.13Remove unsupported parameters+5GPT-6 Sollow+22%-91%$0.13MiMo v2.6 ProthinkingOpen+32%-91%$0.13Context: 1.05M → 1M+4DeepSeek V4.1 Flash 1017maxOpen+50%-83%$0.26Context: 1.05M → 1M+5MiMo v2.6 FlashthinkingOpen+44%-96%$0.062Context: 1.05M → 1M+4
GLM 5.3maxOpen+40%+30%$2.01Context: 1.05M → 1M+5
Ling 3.1 FlashOpen+39%-35%$1.00Context: 1.05M → 1M+1GLM 5.3 FlashmaxOpen+36%-82%$0.28Context: 1.05M → 1M+5GPT-6 Astrahigh+50%+12%$1.73Monitoring can return HTTP 403+2GPT-6.1 Solhigh+45%-79%$0.32Remove unsupported parameters+5GPT-6 Solhigh+36%-76%$0.37GPT-5.6 Solhigh+25%-48%$0.81GPT-6 Lunahigh+8%-98%$0.029Function calling only with none · Chat Completions+3GPT-5.6 Terrahigh-5%-78%$0.34Prompts with >272K input tokensGPT-5.5 Instant (June 2026)-18%-55%$0.69Context: 1.05M → 400KGPT-5.6 Lunahigh-20%-97%$0.044All OpenAI models →Benchmarks
in Agents & Tool UseWatch out 1
Prompts with >272K input tokens›
Above 272K input tokens, input costs 2× and output 1.5× for the full session in Standard, Batch and Flex. Source ↗
FAQ
How much does GPT-5.5 cost?›
$5 per 1M input tokens and $30 per 1M output tokens; cached input $0.50 per 1M. A typical benchmark task costs about $1.54 at high effort.
Is GPT-5.5 free to use?›
There is no free API; the cheapest paid price is $5 per 1M input tokens.
How good is GPT-5.5, and what is it best at?›
#23 of 334 in Chat & Knowledge, #39 of 132 in Coding, #41 of 133 in Agents & Tool Use, #25 of 195 in Writing & Language, #12 of 124 in Vision & Documents. Strongest at: Tool calling, Reasoning, Science, Long context, Knowledge, Instructions, Vision.
Is GPT-5.5 better than Qwen3.8 27B?›
On AutomationBench-AA, GPT-5.5 scores 47.3 vs 48.2 — about the same. It is 53% more expensive per task.
How can I use GPT-5.5?›
Through the API of Amazon Bedrock, Azure, OpenAI.
What is the context window of GPT-5.5?›
1.05M tokens, with up to 128K output tokens.
When was GPT-5.5 released? Is there a newer version?›
Released 2026-04-23. It has been superseded by GPT-5.6 Sol.
Is GPT-5.5 open source?›
No, GPT-5.5 is a closed model available through an API. The closest open-weights option here is DeepSeek V4.1 Flash 1017.
Can GPT-5.5 read images?›
It accepts text and images, PDF files as input.
What is GPT-5.5?›
GPT-5.5 is a closed language model from OpenAI, released Apr 2026, the successor to GPT-5.4.
What are the best alternatives to GPT-5.5?›
MiniMax M3.1 Flash (cheaper), GPT-6 Luna (better), DeepSeek V4.1 Flash 1017 (open weights).