GPT-5.6 just leaked from OpenAI’s Codex backend logs with three internal codenames — iris-alpha, ember-alpha, beacon-alpha — a 1.5 MILLION token context window, and Polymarket odds at 85%+ for release before June 30. Meanwhile, Claude Mythos quietly wins 17 of 18 benchmarks Anthropic measured. Here’s everything that leaked, all in one short.

— WHAT’S IN GPT-5.6 (LEAKED)
– Identifier ‘gpt-5.6’ spotted in OpenAI Codex traces
– Codenames: iris-alpha, ember-alpha, beacon-alpha
– Context window: 1.5M tokens (+43% over GPT-5.5)
– Two tiers: standard + GPT-5.6 Pro
– 2-3x CHEAPER than Anthropic Mythos at same tier (rumored)
– Major focus: agentic workflows + front-end generation

— CLAUDE MYTHOS BENCHMARK LEAK
Mythos leads 17 of 18 benchmarks Anthropic measured:
– SWE-bench Verified: 93.9% (vs Opus 4.6 at 80.8%)
– SWE-bench Pro: 77.8% (vs GPT-5.4 at 57.7%)
– Terminal-Bench 2.0: 82.0%
– USAMO 2026: 97.6%
– GPQA Diamond: 94.5%
– BrowseComp: 86.9%
– Cybench: 100% (saturated)
Mozilla found 231 zero-day vulnerabilities testing Mythos against Firefox — 10x more than the previous Claude model.

— TRAINING COMPUTE LEAK
Microsoft accidentally revealed Mythos compute on a Build 2026 slide: ~6.1 x 10^27 FLOPs. That’s roughly 300x more than GPT-4 was trained on.

— FREE PDF GUIDE (full benchmark table + release dates)
https://drive.google.com/file/d/1CgliJL_OZXpVQFJLTfB2GQ4fVn8XFtfJ/view

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GoHighLevel Pro Trial — the all-in-one CRM + marketing platform we use:
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— RECOMMENDED CHANNELS
Matt Wolfe — https://www.youtube.com/@mreflow
AI Explained — https://www.youtube.com/@aiexplained-official
Two Minute Papers — https://www.youtube.com/@TwoMinutePapers
Fireship — https://www.youtube.com/@Fireship
Wes Roth — https://www.youtube.com/@WesRoth
TheAIGRID — https://www.youtube.com/@TheAiGrid
All About AI — https://www.youtube.com/@AllAboutAI
1littlecoder — https://www.youtube.com/@1littlecoder
World of AI — https://www.youtube.com/@intheworldofai
Prompt Engineering — https://www.youtube.com/@engineerprompt

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