Google发布Gemini Decision 1

Today was the “System One day” of the second annual AIE CODE event, and somehow everything aligned:

• Cloudflare’s Michelle Chen walked through their Clef and Clairic models
• Richard covered Diogo’s triumphant return to AIE talking about the Jevolution with their most notable production customers since crossing $100M ARR
• In a BIG surprise, Google beat Anthropic to launching a production decision model, with Sundar and Logan announcing Gemini Decision 1, a calibrated multimodal decision model capable of taking up to 1000 questions and costing $0.10 per million input with ~200ms e2e latency.

Benchmarks are good (usual caveat about benchmarks):

And you can hear all this and more on today’s System One track.

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AI Twitter Recap

Google Launches Gemini Decision 1 for Single-Pass Classification

• Gemini Decisions API: Google introduced a new API backed by Gemini Decision 1. The model handles closed-set decisions, so it scores choices in a single pass instead of generating text token by token (Sundar Pichai, Logan Kilpatrick, Google).
• Specs: It supports yes/no, multiple-choice and rubric scoring, with up to 255 multiple-choice options. It accepts text, image, audio, video and PDF inputs, handles up to 1,000 questions per request, has 256K context, returns answers in 150–250 ms end to end, and attaches a confidence score to every answer (@_philschmid).
• Pricing: $0.10 per 1M input tokens, with $0 billed for output. Google says that is about 5x cheaper than Flash-Lite (Sundar).
• Origin: The project started as an internal Google DeepMind prototype. A small team shipped the model and API about six weeks later (@_philschmid).
• Google's comparison with TypeSafe's Jev: Google's own tests show Decision 1 beating Jev 1.14 on 5 of 7 shared benchmarks, including 92.2% vs 90.0% on JevBench. Jev costs $0.042 per 1M input tokens (@kimmonismus).
• Artificial Analysis evaluation: Independent results are more mixed (Artificial Analysis).
• Overall score: Decision 1 scores 66 on the Decision Index. That ties Elephant 9B and Jev 1.14, and sits 7 points behind Drex Max v1.1 and GLiDE v1.2.
• Strengths and weaknesses: It leads AA-Omniscience-Decision (66) and HLE-MultiChoice (49). On AA-Paperclip, it answers every question correctly on only 33% of documents, versus 63% for Drex Max.
• Cost and latency: It costs $345 per 1M tasks, versus $103 for Drex Max and $156 for Jev. Its Brier score is 0.18. Average time per task is 211 ms, slower than Jev at 92 ms (latency).
• Early adopters: Stitch built a rapid-design experiment on the API that goes from a rough prompt to a multi-screen product flow in about 5 seconds (Stitch). LangChain shipped day-zero support with a base class shared with TypeSafe classifiers (LangChain).
• Architecture pattern: At AI Engineer, Cloudflare described a hybrid agent design. Fast decision models handle tool selection and log extraction, and a large reasoning model handles diagnosis only. In its demo, this cut six LLM calls to one and about 40K tokens to 1.8K (TheTuringPost).

Frontier Model Evals: Fable 5.2 Leads, Carbon Draws Speed Complaints

• Claude Fable 5.2 on Agent Arena: Fable 5.2 (Max) ranks #1 with a +30.4% net improvement across 4.7K real agentic sessions. That is about 1.6x the score of #2, Opus 5.5 (+19.5%). It is also #1 in Code, Work and Chat (Arena, Pareto view).
• Pricing: API prices drop from $10/$50 to $8/$40 per 1M input/output tokens. Median cost per task is $7.3, versus $5.5 for Opus 5.5, $1.5 for Gemini 4 Carbon (High) and $6.0 for GPT-6-Astra.
• Other evals:
• AA-Robotics v0.1: Fable 5.2 leads at 75, ahead of Astra (69) and Sol (65) (AA).
• VIALS-AA (visual reasoning): It scores 67% with tools but only 44% without them. Haiku 5.5 with tools reaches 49% at $0.07 per task (AA).
• Debate benchmark: It won 209 of 224 debates in a Cambridge Union-style contest (@SamuelFitouss10).
• Effort calibration: Within the Claude lineup, Artificial Analysis finds that moving up a model tier beats raising effort: Opus 5.5 at xhigh outscores Sonnet 5.5 at max with 40% lower cost per task (AA). Vals separately reports that Fable's "high" setting is often cheaper and better than xhigh or max (@RayanKrishnan).
• Gemini 4 Carbon: Vals ranks Carbon #3 on its index, and the fastest and cheapest of the top five (Vals). Practitioner opinions conflict (Theo, Martin Casado, @MParakhin).
• Latency complaints: Theo measured Carbon at low effort taking 22m21s, versus 9m33s for Opus 5.5 at high (timing). He also reports about 11 seconds to first token, roughly 20x Fable's, and attributes the delay to the server side (TTFT).
• Coding and math: Casado calls Carbon "really good at code." Parakhin says Carbon often beats Fable on math and ML problems but that he does not trust it with coding.
• Muse Ember: Meta's model posts +1.7% on Agent Arena at about $0.02 per task. That is roughly 4x cheaper than GPT-6 Luna and Haiku 5.5, and about 12x faster than Luna (Arena). Vals reports Ember reaches 85% of Fable 5.2's performance at 0.84% of the cost (Vals).
• Chinese models:
• Qwen 4: Qwen-4-Max appears to be live. Rumors that it is disappointing remain unconfirmed (@kimmonismus). Some users are skeptical about how Alibaba has labeled its variants (@teortaxesTex).
• ERNIE 5.5 Flash Preview: Baidu's model is trending toward #2 among open models on Code Arena WebDev at 1668. Apache 2.0 weights are promised (Arena).
• Nex-N2.6: This open multimodal agent model claims 83.0 on OSWorld and 84.1 on Terminal-Bench 2.1 (Nex).

AI for Science, Verification and Robotics

• Formal verification of Signal: Google DeepMind's AlphaProof Code framework produced Lean proofs of key security properties for unmodified libsignal, down to compiled machine code. Gemini agents generated over 6M lines of proofs, leaving humans to review the critical 1% (GDM, details).
• Effort: A five-person team finished in four weeks. Verifying the seL4 microkernel took twenty person-years. When two old bugs were reintroduced, the system proved the buggy versions insecure (@omarsar0).
• AlphaGenome 2: DeepMind's genomics model now conditions its variant-effect predictions on cell type and state. It can adapt to unseen states from a few dozen cells without retraining (@pushmeet, GDM thread).
• Results: On TenK10K, it identifies 30% of causal variants versus 16% for the original model, and 43% of directional gene effects versus 23%. It also recovered the known ETS2 variant behind inflammatory bowel disease in gut macrophages.
• Availability: It is available through the API for non-commercial research (Demis Hassabis).
• Praxis-1 (Runway): Runway released a 27B MoE diffusion-transformer world action model with Apache 2.0 weights. It ranks #1 on RoboLab-120 (@jongranskog, @c_valenzuelab).
• Claimed results: Runway says it finished tasks 15.6x faster than GPT-6 Astra driving the same arm, at 51x lower cost per task (Runway).
• Ecosystem: vLLM-Omni has day-0 support (vLLM), and NVIDIA published NVFP4 checkpoints and a Jetson path (NVIDIA Robotics).
• Gemini Robotics 2.5: The VLA model was evaluated on 200 tasks. Google reports 30–100% higher success rates and 20–30% faster completion than prior baselines. Gemini 4 Argon served as a simulation engine during development, and the model is rolling out to partners (Google, details).
• Other robotics work: