GPT-5.5 Instant (June 2026)
GPT-5.5 Instant (June 2026)Alternatives?
CheaperGPT-6.1 Solhigh+58%-44%$0.32Remove unsupported parameters+5BetterGPT-5.6 Lunahigh+10%-92%$0.044
OpenKimi K3max+9%+252%$2.00Sampling parameters are fixed+3CheaperGPT-6.1 Terramax+42%-29%$0.40CheaperGPT-5.6 Solmedium+30%-11%$0.50GPT-6.1 Solhigh+58%-44%$0.32Remove unsupported parameters+5GPT-6.1 Terramax+42%-29%$0.40GPT-5.6 Solmedium+30%-11%$0.50GPT-6 Solxhigh+22%-8%$0.52GPT-5.6 Lunamax+19%-69%$0.18GPT-5.6 Lunahigh+10%-92%$0.044GPT-6.1 Terralow+27%-90%$0.055GPT-6 Lunamax+13%-88%$0.068Function calling only with none · Chat Completions+3GPT-6.1 Sollow+34%-77%$0.13Remove unsupported parameters+5GPT-6 Sollow+20%-77%$0.13Kimi K3maxOpen+9%+252%$2.00Sampling parameters are fixed+3
MiMo v2.6 ProthinkingOpen-5%-77%$0.13Pass back reasoning_content+3
Muse Spark OpenxhighOpen-8%+48%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1
DeepSeek V4.1 Flash 1017maxOpen-15%-54%$0.26Pass back reasoning_content · Chat Completions+4
Qwen3.8 27BxhighOpen-19%+102%$1.15Context: 400K → 262K+5GPT-6 Astramedium+50%+171%$1.54Monitoring can return HTTP 403+2GPT-6.1 Solmedium+49%-62%$0.21Remove unsupported parameters+5GPT-6.1 Terramedium+41%-83%$0.095GPT-5.6 Solmedium+30%-11%$0.50GPT-6 Solmedium+18%-57%$0.25GPT-5.5mediumsame+35%$0.77Prompts with >272K input tokensGPT-5.6 Terramedium-16%-68%$0.18Prompts with >272K input tokensGPT-5.6 Lunamedium-25%-97%$0.016All OpenAI models →Benchmarks
in Chat & KnowledgeFAQ
How much does GPT-5.5 Instant (June 2026) cost?›
There is no per-unit API price: API price not public.
Is GPT-5.5 Instant (June 2026) free to use?›
There is no free API.
How good is GPT-5.5 Instant (June 2026), and what is it best at?›
#127 of 336 in Chat & Knowledge, #36 of 134 in Coding, #48 of 135 in Agents & Tool Use, #26 of 135 in Vision & Documents. Strongest at: Knowledge.
Is GPT-5.5 Instant (June 2026) better than MiniMax M3.1 Flash?›
On GDP.pdf · AA all-pass, GPT-5.5 Instant (June 2026) scores 20.2 vs 20.8 — about the same. It is 158% more expensive per task.
What is the context window of GPT-5.5 Instant (June 2026)?›
400K tokens.
When was GPT-5.5 Instant (June 2026) released? Is there a newer version?›
Released 2026-06-25. It is the current version in its line.
Is GPT-5.5 Instant (June 2026) open source?›
No, GPT-5.5 Instant (June 2026) is a closed model available through an API. The closest open-weights option here is Kimi K3.
Can GPT-5.5 Instant (June 2026) read images?›
It accepts text and images as input.
What is GPT-5.5 Instant (June 2026)?›
GPT-5.5 Instant (June 2026) is a closed language model from OpenAI, released Jun 2026, the successor to GPT-5.5 Instant (May 2026).
What are the best alternatives to GPT-5.5 Instant (June 2026)?›
GPT-6.1 Sol (cheaper), GPT-5.6 Luna (better), Kimi K3 (open weights).