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This Week
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Claude Opus 4.72026-07-07
Anthropic releases Claude Opus 4.7 with 92% honesty benchmark and reduced sycophancy
GPT-4 Turbo2026-07-06
GPT-4 launched and began its 52-week reign at the top of the ECI
Claude Opus 4.72026-05-17
Autonomously ported Adobe Lightroom CC to Linux via Wine after a single prompt
Claude Opus 4.72026-04-23
Opus 4.7 released with new tokenizer causing 40%+ cost increase
Claude Opus 4.72026-04-20
Anthropic released Claude Opus 4.7 with an updated tokenizer that increases token counts for the same input
Claude Opus 4.72026-04-20
Released Claude Opus 4.7 with 87.6% on SWE-Bench
Claude Opus 4.72026-04-17
Opus 4.7 achieved 98.5% on XBOW visual acuity benchmark, up from Opus 4.6's 54.5%.
GPT-4 Turbo2026-03-14
Release of GPT-4, which established OpenAI's early dominance in the AI race.
GPT-4 Turbo2024-09-01
GPT-4 surpassed on ECI by GPT-4o and Claude 3.5 Sonnet, ending 18-month reign.
GPT-4 Turbo2023-03-14
Official public launch of GPT-4 by OpenAI
Ecosystem
Claude Opus 4.7
competes withClaude Opus 4.63 src
competes withGemini 3 Pro2 src
competes withComposer 21 src
deploysReinforcement Learning from Human Feedback (RLHF)1 src
deploysChain-of-Thought Prompting1 src
competes withGPT-51 src
GPT-4 Turbo
competes withClaude Opus 4.71 src
Benchmarks
mirrorcode
Claude Opus 4.756
GPT-4 Turbo—