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Models2026-06-19 · source-backed
Terminal-Bench 2.1 results (entries dated June 17) put Codex CLI on GPT-5.5 first at 83.4%, Claude Code on Fable 5 second at 83.1%, and Claude Code on Opus 4.8 at 78.9%. The asterisk matters more than the ranking: Fable 5 and Mythos 5 have been export-suspended since June 12, so most users can't run the top Claude configuration today. That makes Codex/GPT-5.5 and Opus 4.8 the practically available leaders. When you pick a coding agent this week, "best on the benchmark" and "available to you" are different lists.
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GPT-5.6 Sol Ultra tops out at 91.9%. The public leaderboard is led by Codex CLI plus GPT-5.5 at 83.4%, with Claude Code plus Opus 4.8 the top usable Claude pairing at 78.9%, and Gemini CLI plus Gemini 3.1 Pro at 70.7% (Morph). There are now roughly 35 actively maintained CLI c...
Weeks after launch, Z.ai's open-weight GLM-5.2 now accounts for roughly 75% of all Z.ai model traffic on OpenRouter, with at least one provider serving it past 125 tokens per second (GIGAZINE, citing OpenRouter). The numbers behind the surge: an Artificial Analysis Intelligenc...
I don't care that Grok 4.5 ranks #4. I care that it resolves a SWE-Bench Pro task with an average of 15,954 output tokens where Opus 4.8 spends 67,020. That's a 4.2x efficiency gap, and it lands straight in my monthly bill. SpaceXAI launched Grok 4.5 on July 8, a roughly 1.5T-...
This is the other half of the Fable 5 story, so read them together. While the best coding model in the world is uncallable, an open-weight one quietly posted frontier-adjacent numbers. Per Tom's Hardware, independent benchmarks for the MIT-licensed GLM-5.2 (744B params, 40B ac...
Claude Code 2.1.229 shipped a config flag most people will scroll past: CLAUDE_CODE_WORKFLOW_PREFIX_STAGGER_MS. What it does is delay the launch of sibling agents that share a prompt prefix, so the second through Nth agents read the warm cache instead of each writing their own...
Martin Alderson's essay "The upcoming AI margin collapse, part 1: GLM 5.2" hit 675 points and 462 comments on Hacker News, and it's the rare HN chart-topper that's actually about spreadsheet math instead of vibes. The argument is simple. Z.ai's GLM 5.2 delivers frontier-adjace...
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