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GPT-5.1 Instant vs GPT-5.2 Codex
Comprehensive side-by-side LLM comparison
GPT-5.1 Instant supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5.1 Instant, released by OpenAI in November 2025, is a low-latency variant from the GPT-5.1 family optimized for fast response times and high-throughput workloads. It targets real-time applications, conversational assistants, and production APIs where response speed is a primary requirement alongside GPT-5.1-generation reasoning quality.
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OpenAI
GPT-5.2 Codex is a coding-specialized variant from the GPT-5.2 family, designed for software engineering workflows including automated code generation, multi-file editing, and agentic development. It builds on GPT-5.2's improved instruction following and long-context capabilities, with optimizations specifically targeting programming tasks and agentic software workflows.
2 months newer
GPT-5.1 Instant
OpenAI
2025-11
GPT-5.2 Codex
OpenAI
2026-01-14
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5.1 Instant
0 providers
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GPT-5.2 Codex
0 providers
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GPT-5.1 Instant
Avg Score:0.0%
Providers:0
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GPT-5.2 Codex
Avg Score:0.0%
Providers:0