Claude Sonnet 5.5 is now live in Command Code
Command Code says Claude Sonnet 5.5 is available across GOAT, Pro, Max, and its API. It says the model runs 30% faster, costs 30% less, and beats Opus 5.5 on Terminal-Bench 4.0.
#opus-5-5
View all AI newsClaudeDevs publishes a guide for building with Claude Sonnet 5.5
ClaudeDevs says Claude Sonnet 5.5 is out and has published a guide for building with it, covering model choice against Opus 5.5, migration from Sonnet 5, and use in Claude Code.
Opus 5.5 leads Anthropic models on OpenRouter by spend and tokens
About one week after launch, OpenRouter says Opus 5.5 ranks first among Anthropic models on its platform by share of spend and share of tokens, with a particularly rapid shift away from Opus 5.
Ali Ghodsi says GPT-6 Luna is 20x cheaper than Opus 5.5 for high-volume routing
Ali Ghodsi says a test of the latest AI models on 2,400 engineers shifted the cost/quality frontier. He says GPT-6 Luna is 20 times cheaper than Opus 5.5 for high-volume routing, while Opus 5.5 is now their daily default, with higher quality and a 20% lower cost than prior baselines.
Databricks tests find Opus 5.5 and GPT-6 Luna expand coding cost and quality
Patrick Wendell says Databricks’ analysis of 2,400 engineers’ online workloads, plus offline evaluations, finds Opus 5.5 and GPT-6 Luna expand the cost/quality frontier. Opus 5.5 cut same-task cost by 20% versus Opus 4.8, and Databricks is encouraging it as a daily default for coding.
ClaudeDevs says Opus 5.5 is 20% cheaper per token and 60% cheaper on cache reads
ClaudeDevs says Opus 5.5 costs 20% less per input and output token than Opus 5, and 60% less on cache reads. It also published a calculator for estimating Claude Code task cost from /usage.
GPT 6 Sol, Luna and Opus 5.5 are now available in OpenCode
OpenCode now offers GPT 6 Sol, Luna and Opus 5.5. No pricing, limits, or eligibility conditions are stated.
Opus 5.5, GPT-6-Sol and GPT-6-Luna are live on Radius
Pi says the three models are available on Radius at radius.earendil.com.
Claude Opus 5.5 is now available in v0
v0 now supports Claude Opus 5.5. Claude says it is the first model in the Claude 5.5 family, performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.
Opus 5.5 is available in Claude Code and the Claude Platform
ClaudeDevs says Opus 5.5 is available in Claude Code and the Claude Platform, and is using it as the new daily driver for coding and agentic work, citing its intelligence, lower price, and speed.
ClaudeDevs says Opus 5.5 is the first Opus with Fable 5.1-class safeguards
The safeguards cover cyber, bio, and frontier LLM development. Flagged requests fall back to another model, and ClaudeDevs says it is working to reduce incorrect flags.
Claude introduces Opus 5.5 and says it costs 40% less to run than Opus 5
Opus 5.5 is the first model in the Claude 5.5 family. Claude says it matches Claude Fable 5.1 on most tasks, while ClaudeDevs says it is about 30% faster and about 40% cheaper per task than Opus 5, alongside higher Claude Code session limits.
Claude introduces Opus 5.5, the first model in the Claude 5.5 family
Claude says Opus 5.5 performs at the level of Claude Fable 5.1 for most tasks and costs 40% less to run than Opus 5.