GPT-5.5 Instant (June 2026)
Jun 2026
GPT-5.5 Instant (June 2026)Compare inon
GPT-5.5 Instant (June 2026) measured on 7 of 42 Agents & Tool Use benchmarks7
BenchmarkByScoreRank
Agents6
Documents1
No benchmark matches
$0.69per task?
API price not publicprice
167 tok/sfirst token in 0.9 s?
400Kcontext
Alternatives?
ModelScoreCostPer taskWhat changes
CheaperQwen3.8 FlashthinkingOpenwins 94%-46%$0.37Context: 400K → 262K+6
BetterClaude Haiku 5.5lowwins 54%-96%$0.024Remove sampling parameters+5
CheaperDeepSeek V4.1 Flash 1017maxOpenwins 94%-62%$0.26Pass back reasoning_content · Chat Completions+4
CheaperMiMo v2.6 ProthinkingOpenwins 92%-81%$0.13Pass back reasoning_content+3CheaperGPT-6.1 Solxhighwins 92%-43%$0.39Remove unsupported parameters+5ModelScoreCostPer taskWhat changes
Qwen3.8 FlashthinkingOpenwins 94%-46%$0.37Context: 400K → 262K+6Claude Haiku 5.5maxwins 94%-69%$0.21Remove sampling parameters+5DeepSeek V4.1 Flash 1017maxOpenwins 94%-62%$0.26Pass back reasoning_content · Chat Completions+4MiMo v2.6 ProthinkingOpenwins 92%-81%$0.13Pass back reasoning_content+3GPT-6.1 Solxhighwins 92%-43%$0.39Remove unsupported parameters+5ModelScoreCostPer taskWhat changes
Claude Haiku 5.5lowwins 54%-96%$0.024Remove sampling parameters+5GPT-6 Lunahighwins 64%-96%$0.029Function calling only with none · Chat Completions+3GPT-5.6 Lunahighwins 62%-94%$0.044MiMo v2.6 FlashthinkingOpenwins 91%-91%$0.062Pass back reasoning_content+3GPT-6.1 Sollowwins 54%-81%$0.13Remove unsupported parameters+5ModelScoreCostPer taskWhat changes
Qwen3.8 FlashthinkingOpenwins 94%-46%$0.37Context: 400K → 262K+6DeepSeek V4.1 Flash 1017maxOpenwins 94%-62%$0.26Pass back reasoning_content · Chat Completions+4MiMo v2.6 ProthinkingOpenwins 92%-81%$0.13Pass back reasoning_content+3
GLM 5.3maxOpenwins 92%+190%$2.01No image input+4
Kimi K3maxOpenwins 92%+189%$2.00Sampling parameters are fixed+3ModelScoreCostPer taskWhat changes
GPT-6 Astramediumwins 90%+123%$1.54Monitoring can return HTTP 403+2GPT-6.1 Solmediumwins 83%-69%$0.21Remove unsupported parameters+5GPT-5.6 Solmediumwins 71%-27%$0.50GPT-6 Solmediumwins 59%-64%$0.25GPT-6 Lunamediumsame-97%$0.017Function calling only with none · Chat Completions+3GPT-5.6 Terramediumwins 43%-73%$0.18Prompts with >272K input tokensGPT-5.5mediumwins 38%+30%$0.90Prompts with >272K input tokensGPT-5.6 Lunamediumwins 29%-98%$0.016All OpenAI models →Benchmarks
in Agents & Tool UseTerminal-Bench 2.134.8#93
Terminal-Bench 4.012.6#34
GDPval-AA (work tasks) 2.10.5#121
τ³-Banking · AA11.8#85
AutomationBench-AA36.4#46
AA-Briefcase 1.1 · Elo1,086.4#50
FAQ
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?›
#125 of 334 in Chat & Knowledge, #34 of 132 in Coding, #46 of 133 in Agents & Tool Use, #25 of 133 in Vision & Documents. Strongest at: Knowledge.
Is GPT-5.5 Instant (June 2026) better than JT-4.1 Flash 236B A21B?›
On AA-Briefcase 1.1 · Elo, GPT-5.5 Instant (June 2026) scores 1,086.4 vs 1,089.3 — about the same.
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 Qwen3.8 Flash.
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)?›
Qwen3.8 Flash (cheaper), Claude Haiku 5.5 (better).