Technology
April 16: Claude Opus 4.7 launches with sharper coding, better vision, and a public concession that Mythos is stronger
Anthropic released Opus 4.7 this morning, two months after Opus 4.6, at the same $5/$25 per million token list price. The model posts 64.3% on SWE-bench Pro (roughly 11 points above 4.6), 87.6% on SWE-bench Verified, and triples supported image resolution to 2,576 pixels on the long edge. A new "xhigh" reasoning tier sits between high and max and is the new default for Claude Code. Anthropic also conceded openly that Opus 4.7 is not its best internal model — Mythos Preview, released in a restricted program two weeks ago, remains stronger, and Opus 4.7's cyber capabilities were deliberately constrained during training.
So what
The most important product signal is not the benchmarks but the cadence. Anthropic is shipping flagship Opus updates every two months, each requiring prompt retuning and harness adjustment. Growth-company engineering leaders should stop treating model upgrades as events and start treating them as infrastructure: expect to reauthor prompts, retest harnesses, and retune cost models each cycle. The commercial subtext also matters — Anthropic separately began shifting Claude Enterprise to consumption-based pricing this week, which should appear in procurement conversations over the next quarter.
Hype check
The new tokenizer can consume up to 1.35x more tokens per input, and LlamaIndex's independent ParseBench reported chart reasoning gains alongside a regression on layout tasks and unchanged content faithfulness; Anthropic also quietly phased out MRCR after a long-context retrieval drop from 78% to 32%. Flat list pricing does not mean flat effective cost.
Confidence: Established fact — confirmed by Anthropic's announcement and corroborated by CNBC, Axios, and multiple independent evaluators.
Go deeper Anthropic announcement · CNBC · The Neuron
