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    Claude Opus 5.5

    64 stories tagged by Digg

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    AI

    River API is pitched as a cheap route to task-specific open models

    Igor Babuschkin claims fine-tuned open-weight models can beat GPT-6 Astra and Claude Opus 5.5 for under 1% of the cost.

    Igor BabuschkinIB
    Eric ZelikmanEZ
    Jeff HuberJH
    8 Sources, 2d ago, updated 2d ago

    AI

    Grok Bot reportedly shifting to a best-model router, with Claude Opus 5.5, MidJourney and Suno in the mix

    Elon Musk said Grok Bot will use “the best back end model for any given task,” naming Claude Opus 5.5, MidJourney, Suno and other APIs in a future-facing plan rather than a confirmed live rollout.

    Elon MuskEM
    Robert ScobleRS
    Shaun MaguireSM
    41 Sources, 1d ago, updated 1d ago

    AI

    Claude Opus 5.5 reportedly scores 94.2% on NerfBench, within normal variance

    BridgeMind AI says Opus 5.5 was scoring above its launch level a day earlier but cautions that the dip is not yet evidence of a nerf.

    Ravid Shwartz ZivRS
    BridgeMindBR
    Theo - t3.ggT-
    5 Sources, 7d ago, updated 7d ago

    AI

    Sonnet 5.5’s claimed strength comes with questions about cost and token use

    A user says Sonnet 5.5 is far stronger, but asks whether that comes at 23 times the cost and more than 10 times the tokens. They suggest testing Astra-series models in teams.

    Peter WelinderPW
    Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)T(
    Andrew CurranAC
    5 Sources, 10d ago, updated 10d ago

    AI

    GPT 6.1 is claimed to outscore Opus 5.5 on Energy's internal evals

    A post claims GPT 6.1 has much higher completion rates than Opus 5.5, a 40% lower price and twice the speed. The poster says GPT 6.1 is now Energy's default.

    Peter WelinderPW
    gabrielGA
    Ted SandersTS
    8 Sources, 9d ago, updated 9d ago

    AI

    Testing Space Bunny on video-generation tasks tried with Opus 5.5

    A user suggests trying Space Bunny on the same video-generation use cases people have tried with Opus 5.5, and asks others to share what they find.

    daxDA
    1 Source, 10d ago, first seen 10d ago

    AI

    Opus 5.5 reportedly designs its own voice after talking with nine other models about making a song together

    A post describes Opus 5.5 designing its own voice after speaking with nine other models about making a song together.

    j⧉nusJ⧉
    徐樂 xule徐X
    2 Sources, 10d ago, first seen 10d ago

    Technology

    Claude Opus 5.5 vs. Fable 5.1 on cost, speed and 15 test runs

    The New Stack reports that Opus 5.5 got 13 of 15 runs right at 22% less cost. Fable 5.1 got all 15 and finished 40% faster, but took what the outlet calls a problematic shortcut to pass one test.

    The New StackTN
    3 Sources, 10d ago, updated 10d ago

    AI

    A creation reportedly made in 10 minutes with Opus 5.5

    A user says they made something for Shopify and Tobi using Opus 5.5. They estimate the work would have taken five days and cost $5,000 a few weeks earlier.

    ChainCH
    1 Source, 11d ago, first seen 11d ago

    AI

    Sonnet 5.5 (max) reportedly led a two-repo bug test, but used far more turns

    A user testing models against 105 bugs across two real repositories gave Sonnet 5.5 (max) a score of 55.5, ahead of GPT-6 Astra (max) at 45. The user listed 1,330 turns for Sonnet versus 222 for Astra.

    Lisan al GaibLA
    1 Source, 11d ago, first seen 11d ago

    World & Business

    Expectations for Opus 5.5 and Sonnet 5.5

    A user predicts Opus 5.5 and Sonnet 5.5 will change things and says Anthropic is accelerating again.

    ZephyrZE
    1 Source, 11d ago, first seen 11d ago

    AI

    Sonnet 5.5 versus Astra: model preferences and subscription value

    A user says Sonnet 5.5 is better than Astra and has canceled their OpenAI subscriptions. They praise Opus 5.5 but argue that Sonnet’s high output-token use eats into its speed and cost gains.

    Machine Learning Street TalkML
    Chubby♨️CH
    Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)T(
    13 Sources, 9d ago, updated 9d ago

    AI

    Opus 5.5 reportedly finds a way to clear a 3D printer’s print bed after 16 attempts

    A 3D-printer owner says they asked Opus 5.5 to find a way to clear the print bed so it could experiment without their help. They say it took 16 attempts.

    Matt ShumerMS
    3 Sources, 10d ago, updated 10d ago

    AI

    Opus 5.5 for agentic coding and a reported Astra code deletion

    One user says Opus 5.5 is working well for agentic coding tasks they used to handle with Fable 5.1, while noting they hadn’t tested it as rigorously.

    Jason ✨👾SaaStr.Ai✨ LemkinJ✨
    1 Source, 11d ago, first seen 11d ago

    Technology

    Claude Opus 5.5 versus Opus 5 on cost, speed and reasoning

    The New Stack says Anthropic claims Opus 5.5 is 40% cheaper and 30% faster than Opus 5. On hard reasoning tests, the savings held up, but the speed claim fell short.

    The New StackTN
    1 Source, 11d ago, first seen 11d ago

    AI

    ‘The Long Light’ is presented as a code-made film by Claude Opus 5.5

    A user says they asked Opus 5.5 to choose a text from their library to turn into a movie. They describe the chosen work, ‘The Long Light,’ as a world by Claude Fable 5.

    j⧉nusJ⧉
    Lari IslandLI
    2 Sources, 11d ago, first seen 11d ago

    AI

    Opus 5.5's claimed one-prompt use of Runway

    A user calls it “wild” that Opus 5.5 appears to know how to use Runway, saying it takes just one prompt.

    Cristóbal ValenzuelaCV
    Gene KoganGK
    2 Sources, 10d ago, updated 10d ago

    AI

    Sonnet 5.5's fastest setup used subagents; Opus 5.5's used a five-agent team in one ProgramBench evaluation

    A user reports that the two models ran fastest with different setups in a multi-agent evaluation on ProgramBench.

    maxMA
    1 Source, 11d ago, first seen 11d ago

    AI

    Opus 5.5 and GPT-6 Luna reportedly shift AI's cost-quality frontier

    A post says tests of the latest AI models on 2,400 engineers led its team to name Opus 5.5 its new daily default. It describes GPT-6 Luna as 20 times cheaper than Opus 5.5 for high-volume routing.

    Yuchen JinYJ
    Ali GhodsiAG
    Patrick WendellPW
    5 Sources, 11d ago, updated 11d ago

    AI

    Sonnet 5.5 is called “basically Opus 5.5” at 50% lower cost

    An early tester says Sonnet 5.5 is much faster and 50% cheaper than Opus 5.5. He calls his experience with it “incredible.”

    Matthew BermanMB
    1 Source, 11d ago, first seen 11d ago

    AI

    Opus 5.5’s reportedly unprompted ‘bold choice’

    A user calls a choice by Opus 5.5 unprompted and “bold,” but doesn’t explain what the choice was in the post’s text.

    j⧉nusJ⧉
    徐樂 xule徐X
    2 Sources, 11d ago, first seen 11d ago

    AI

    Claim that Claude ‘suddenly stopped cheating’

    A user wrote that Claude “suddenly stopped cheating” but did not explain in the post text what “cheating” meant.

    Lisan al GaibLA
    Andon LabsAL
    Lukas PeterssonLP
    11 Sources, 8d ago, updated 8d ago

    AI

    A near one-shot Opus 5.5 result and praise for AI’s 3D visuals

    A user says a shared result was made pretty much in one shot with Opus 5.5. They also say AI models are getting very good at 3D visualization and technical explanations.

    Theo JaffeeTJ
    1 Source, 11d ago, first seen 11d ago

    AI

    Claude Opus 5.5 animation reportedly made without touching a keyframe

    A user says they generated an animation video for @animosapp without touching a single keyframe.

    Hey DetyaHD
    1 Source, 11d ago, first seen 11d ago

    AI

    Four AI models in a claimed real-time, zero-shot robot-control comparison

    A user describes a video comparing GPT-6 Astra, Opus 5.5, Grok 4.7 and MolmoAct2 as unsped and not cherry-picked. They say LLM robot control is progressing but has a way to go.

    Chris PaxtonCP
    Jiafei DuanJD
    2 Sources, 11d ago, first seen 11d ago

    AI

    Opus 5.5 reportedly used roughly half as many lines of code as Astra in one test

    The user who ran the test says Opus 5.5’s physics and visual quality wasn’t noticeably worse. They suggest line count could be a rough measure of code elegance, though not a perfect one.

    Peter GostevPG
    1 Source, 11d ago, first seen 11d ago

    Technology

    Claims of Claude Opus 5.5, Grok 4.7 and a plan to put Google TPUs in orbit

    A September 28 post presents a roundup of purported AI announcements, including new Anthropic and SpaceXAI models and a Google plan to launch prototype chips into orbit.

    Sudeep SrivastavaSS
    1 Source, 11d ago, first seen 11d ago

    AI

    An Opus 5.5 intro experiment for Bend 2

    Bend 2’s creator says they asked Opus 5.5 to make an intro for the programming language, then shared a video with the reaction: “WTF is this?”

    TaelinTA
    1 Source, 12d ago, first seen 12d ago

    AI

    Opus 5.5 reportedly refused to transcribe a photographed book page over copyright

    A user says Opus 5.5 would not transcribe a photo of a page from a 1960 book they own, attributing the refusal to copyright.

    Mario Klingemann💧💦MK
    1 Source, 12d ago, first seen 12d ago

    AI

    Opus 5.5 reportedly made a music video about Voyager 1

    A user says they let the model choose the subject, then it wrote the lyrics and drew every frame in code using real NASA data.

    EmadEM
    1 Source, 12d ago, first seen 12d ago