Frontier LLM Leaderboard
Independent comparison of frontier AI models from Anthropic, OpenAI, Google DeepMind, Meta, and SpaceXAI. We benchmark the Artificial Analysis Intelligence Index, output speed (tokens/sec), first-chunk latency, and cost per task.
Best Models by Performance Profile
Claude Opus 5.5
Anthropic · 1M Context
Highest quality score on the index (58). Built for multi-layered reasoning, architectural strategy, and zero-compromise accuracy.
Claude Sonnet 5.5
Anthropic · 1M Context
Leading developer choice worldwide. High intelligence (56) paired with 139 tokens/second for instant code gen and agentic loops.
Gemini 3.8 Flash
Google DeepMind · 1M Context
Record-shattering 249 tokens per second with 0.19s latency. The ultimate engine for real-time voice and high-throughput workflows.
GPT-6.1 Sol
OpenAI · 1M Context
High intelligence index of 52 at just $0.72 per task. Unbeatable price-to-performance ratio for massive production deployments.
Comprehensive Model Comparison
| Rank | Model & Creator | Type | Intelligence Index | Output Speed | Latency (TTFT) | Context | Cost per Task | Try Model |
|---|---|---|---|---|---|---|---|---|
| 1 | Claude Opus 5.5Top Overall Intelligence Anthropic·Peak Complex Architecture & Hard Reasoning | Proprietary | 58 | 93 t/s | 0.45s | 1M | $5.98 USD | Try → |
| 2 | Claude Sonnet 5.5Best Developer & Coding Model Anthropic·Full-Stack Coding & Autonomous Terminal Loops | Proprietary | 56 | 139 t/s | 0.45s | 1M | $7.67 USD | Try → |
| 3 | Claude Fable 5.1Creative & Nuance Specialist Anthropic·Narrative Synthesis, Law & Complex Prose | Proprietary | 53 | 68 t/s | 0.45s | 1M | $7.63 USD | Try → |
| 4 | GPT-6 AstraFlagship Multimodal Pioneer OpenAI·Multi-Agent Systems & Deep STEM Synthesis | Proprietary | 53 | 54 t/s | 0.45s | 1M | $3.26 USD | Try → |
| 5 | Gemini 4 ArgonMultimodal Video & Document Titan Google DeepMind·Enterprise Multimodal Ingestion & Workspace Tasks | Proprietary | 53 | 45 t/s | 0.45s | 1M | $1.99 USD | Try → |
| 6 | GPT-6.1 SolBest Intelligence-to-Cost Value OpenAI·High-Volume Production & Cost-Effective Reasoning | Proprietary | 52 | 63 t/s | 0.45s | 1M | $0.72 USD | Try → |
| 7 | Muse Spark 1.3Ultra-Fast Open Ecosystem Meta·High-Throughput Open Deployments & Real-Time Audio | Open Weights | 48 | 152 t/s | 0.45s | 1M | $1.60 USD | Try → |
| 8 | Grok 4.7Live Web & Unfiltered Logic SpaceXAI·Real-Time Telemetry & Real-World News Analysis | Proprietary | 46 | 81 t/s | 0.45s | 500k | $3.74 USD | Try → |
| 9 | MiMo-V2.6-ProLowest Cost Leader Xiaomi·Micro-Budget Scaling & Edge Orchestration | Proprietary | 46 | 46 t/s | 4.08s | 1M | $0.13 USD | Try → |
| 10 | Qwen3.8 Max (0902)Multilingual & Math Specialist Alibaba·Cross-Border Trade, Asian Languages & Complex Math | Proprietary | 45 | 39 t/s | 2.69s | 984k | $5.41 USD | Try → |
| 11 | GLM-5.3 Z AI·API Automation & Structured Workflows | Proprietary | 45 | 71 t/s | 3.42s | 1M | $2.01 USD | Try → |
| 12 | Step 5 Preview StepFun·API Automation & Structured Workflows | Proprietary | 44 | 86 t/s | 3.07s | 1M | $0.72 USD | Try → |
| 13 | Kimi K3 Kimi·API Automation & Structured Workflows | Proprietary | 44 | 34 t/s | 4.53s | 1.05M | $2.00 USD | Try → |
| 14 | GPT-5.6 Terra OpenAI·API Automation & Structured Workflows | Proprietary | 42 | 100 t/s | 0.45s | 1M | $1.40 USD | Try → |
| 15 | GLM-5.3-Flash Z AI·API Automation & Structured Workflows | Proprietary | 42 | 54 t/s | 3.21s | 1M | $0.25 USD | Try → |
Claude Opus 5.5
Claude Sonnet 5.5
Claude Fable 5.1
GPT-6 Astra
Gemini 4 Argon
GPT-6.1 Sol
Muse Spark 1.3
Grok 4.7
MiMo-V2.6-Pro
Qwen3.8 Max (0902)
GLM-5.3
Step 5 Preview
Kimi K3
GPT-5.6 Terra
GLM-5.3-Flash
No models found matching your search query.
How the Frontier Leaderboard Has Evolved
The artificial intelligence market has transitioned from static benchmark benchmarks to holistic, real-world utility measured across intelligence, execution speed, latency, and operational cost:
- Anthropic's Dual-Flagship Strategy: Claude Opus 5.5 commands the highest raw intelligence score (58), excelling at complex system architecture and high-stakes reasoning. Meanwhile, Claude Sonnet 5.5 (56 score at 139 tokens/sec) dominates active developer environments like Cursor and VS Code Copilot.
- OpenAI's Tiered Astra & Sol Models: GPT-6 Astra acts as the reasoning flagship, while GPT-6.1 Sol redefines price-performance by delivering 52 intelligence for just $0.72 per task.
- Google DeepMind's Speed Supremacy: Gemini 3.8 Flash achieves a historic 249 tokens per second with sub-200ms latency, enabling real-time voice and high-throughput enterprise pipelines. Gemini 4 Argon brings heavy multimodal capability to massive document sets.
- Global Cost Disruptors: Xiaomi's MiMo-V2.6-Pro delivers 46 intelligence at just $0.13 per task, demonstrating how rapid distillation and quantization are driving token costs to zero.
Understanding the Artificial Analysis Metrics
Intelligence Index
Standardized composite score (0–100) combining reasoning, software coding, mathematical deduction, and factual comprehension across non-memorizable evaluations.
Output Speed (Tokens/s)
Median token generation rate after the first response packet is returned. Speeds above 100 t/s provide an instant, seamless typing experience for interactive human-in-the-loop workflows.
Latency (Time To First Token)
The duration in seconds before the model generates its initial response chunk. Sub-0.5s latency is essential for voice assistants and automated terminal tool feedback loops.
Cost per Task (USD)
Calculates real expenditure across standardized production queries. Comparing $0.13 vs $5.98 highlights how choosing the right tier slashes enterprise operational costs by 95%.
Multi-Source Benchmarking & Data Privacy
To eliminate provider bias, our index synthesizes intelligence telemetry and evaluation methodologies across three leading research hubs:
Automated latency testing, median token throughput (Tokens/s), and standardized cost-per-task evaluations across global API endpoints.
Crowdsourced, double-blind human preference battles measuring real-world conversational helpfulness and subjective nuance (arena.ai).
European business workflow testing, daily task indexing, and GDPR / AVV data privacy evaluations for enterprise deployment.
Frequently Asked Questions
What is the Artificial Analysis Intelligence Index?
The Artificial Analysis Intelligence Index is an aggregate quality score (0 to 100) evaluating foundation models across challenging, non-memorizable benchmarks including complex reasoning, coding benchmarks, and multi-turn instruction following.
Which AI model is #1 on the leaderboard right now?
Claude Opus 5.5 from Anthropic holds the #1 spot with an Intelligence Index of 58, followed closely by Claude Sonnet 5.5 (56), Claude Fable 5.1 (53), GPT-6 Astra (53), and Gemini 4 Argon (53).
Which model is the best for software development and coding?
Claude Sonnet 5.5 is the top choice for developers. With an Intelligence Index of 56 and a generation speed of 139 tokens per second, it offers unmatched precision in repository-scale code refactoring, terminal agent execution, and debugging.
Which AI model is the fastest?
Gemini 3.8 Flash from Google DeepMind is the speed champion, delivering an incredible 249 tokens per second with a Time-To-First-Token (TTFT) latency under 0.20 seconds, making it ideal for real-time voice, copilot completion, and interactive chat.
How are Cost per Task and API token prices calculated?
Cost per Task measures the standardized price (in USD) required to complete a complex real-world query sequence across input tokens, reasoning/thinking tokens, and generated output tokens. Models range from $0.13 (MiMo-V2.6-Pro) to $5.98 (Claude Opus 5.5).
Does kileaderboard.de point to this benchmark page?
Yes, kileaderboard.de and boredom-at-work.com/ki-leaderboard/ route directly to this canonical benchmark index, giving tech leaders, engineers, and creators transparent and verified AI intelligence metrics.
Master Frontier AI in Your Workflow
Learn how to put these top-ranking models to work with our step-by-step master guides and prompt frameworks.