OpenAI
GPT-5.3 Instant
OpenAI's March 3, 2026 conversation model, retained here for historical comparisons. Its gpt-5.3-chat-latest API alias shut down on August 10, 2026; OpenAI's deprecation notice names gpt-5.6-sol as the replacement. At launch, OpenAI reported 26.8% fewer hallucinations with web access and 19.7% fewer using internal knowledge in its evaluation of high-stakes questions. These are vendor launch results, not current cross-model measurements.
128K tokens
Multimodal
Max
- Provider
- OpenAI
- Context
- 128KEstimated · As of Aug 11, 2026Stale · 31d old
- yno subscription tier
- Max
- Released
- Mar 3, 2026
- Speed
- Fast
- Reasoning
- Advanced
- Modality
- Multimodal
Benchmarks
Quality
- AA Intelligence Index
- 35pointsEstimated · As of Aug 11, 2026Stale · 31d old
- GPQA Diamond
- 83%Estimated · As of Aug 11, 2026Stale · 31d old
Speed and latency
- Output speed
- 130tokens/sEstimated · As of Aug 11, 2026Stale · 31d old
API pricing
Not available
AA measurements unavailable
Indexes use points; evaluations use accuracy percentages. API measurements do not measure yno application performance. Methodology
Capabilities
- Text Generation
- Vision
- Code
- Reasoning
- Tool Use
Use cases
- Everyday conversation
- Web-search-backed Q&A
- General assistance
- Fact-checking
Strengths
- Historical ChatGPT conversation model
- Web-search-backed answers
- Text and image input
- Documented API migration path
Best for
Historical comparisons and migration planning from GPT-5.3 Instant
Use GPT-5.3 Instant in yno.ai
No credit card required
Related models
Frequently asked
- What is GPT-5.3 Instant?
- OpenAI's March 3, 2026 conversation model, retained here for historical comparisons. Its gpt-5.3-chat-latest API alias shut down on August 10, 2026; OpenAI's deprecation notice names gpt-5.6-sol as the replacement. At launch, OpenAI reported 26.8% fewer hallucinations with web access and 19.7% fewer using internal knowledge in its evaluation of high-stakes questions. These are vendor launch results, not current cross-model measurements.
- How much does GPT-5.3 Instant cost in yno.ai?
- GPT-5.3 Instant is available on the Max tier of yno.ai.
- What can GPT-5.3 Instant do?
- GPT-5.3 Instant is best for Historical comparisons and migration planning from GPT-5.3 Instant. Its main capabilities include Text Generation, Vision, Code, Reasoning, Tool Use.
- How does GPT-5.3 Instant compare to other models?
- GPT-5.3 Instant excels at Historical ChatGPT conversation model and is recommended for Everyday conversation, Web-search-backed Q&A, General assistance, Fact-checking. See related models below.
- How do I use GPT-5.3 Instant in yno.ai?
- Sign up for yno.ai, select GPT-5.3 Instant from the model picker, and start chatting.