GPT-53-CODEX
30 days · UTC
Synchronizing with global intelligence nodes...
Benchmarks Are Breaking: Evaluate LLMs in Your Harness, Not Theirs
LLM benchmark scores are failing under real-world conditions, so choose and tune models by testing them in your own harness with controlled tools and ...
OpenAI rolls out GPT-5.3 Instant and 5.3-Codex to the API
OpenAI released GPT-5.3 Instant with faster, more grounded responses and made it available via the API alongside the new 5.3-Codex for code tasks. [Op...
GPT-5.3-Codex: 25% faster agentic coding, now in GitHub Copilot
OpenAI’s GPT-5.3-Codex brings 25% faster, steerable agentic coding for long-running, tool-driven workflows and is rolling out across Codex surfaces an...
Claude Opus 4.6 adds agent teams, 1M context, and fast mode; GPT-5.3-Codex counters
Anthropic’s Claude Opus 4.6 ships multi-agent coding, a 1M-token context window, and a 2.5x fast mode, while OpenAI’s GPT-5.3-Codex brings faster agen...
Codex 5.3 vs Opus 4.6: agentic speed vs long‑context depth
OpenAI's GPT-5.3 Codex and Anthropic's Claude Opus 4.6 arrive with distinct strengths—Codex favors faster agentic execution while Opus excels at long-...
OpenAI’s GPT-5.3-Codex rolls out to Copilot with faster, agentic workflows
OpenAI's GPT-5.3-Codex is a 25% faster, more agentic coding model built for long-running, tool-driven workflows and is now rolling out across Codex su...