Here are some of the biggest model releases of 2026 so far and what to know about them. We'll update this list whenever a notable new model arrives.

What it does: Replacing Opus 4.7 starting today (at the same price), Opus 4.8 offers faster thinking modes for one-third the cost of the earlier version, according to Anthropic. Like most of Anthropic's models, 4.8 prioritizes coding abilities, scoring higher than 4.7 on two coding benchmarks but not fully besting OpenAI's GPT 5.5. It also "reaches new highs on our measures of prosocial traits like supporting user autonomy and acting in the user's best interest," the company noted in the release, though definitions for what that means remain murky.

Why it matters: Anthropic has always prioritized model safety and interpretability, but appears to be further emphasizing that standard with this release. The company said Opus 4.7 had a 92% honesty rate, in addition to being less sycophantic and hallucination-prone overall. The fact that it claims 4.8 shows "substantially" lower rates of misalignment than 4.7 indicates an increasingly high standard for model safety, especially because Anthropic compared 4.8's alignment to that of Mythos Preview.

What it does: OpenAI said in its announcement that the lighter version of OpenAI's just-released GPT-5.5 is less verbose than its predecessor, GPT-5.3 Instant. It also touted fewer hallucinations and improved factuality, saying "GPT‑5.5 Instant produced 52.5% fewer hallucinated claims than GPT‑5.3 Instant on high-stakes prompts covering areas like medicine, law, and finance."