Best AI model, by task
As of October 19, 2026, the best AI model overall is Claude Opus 5.5 (Anthropic), first on the TensorFeed Intelligence Index with 97.1 out of 100 among the 17 models ranked on the 2026 benchmark set. By task, Claude Opus 5.5 leads coding, agents and reasoning; Claude Opus 5 leads computer use; and GPT-6 Astra leads web research.
Each task is ranked on one public benchmark, or on price and index score, with vendor-reported figures flagged. Benchmark data as of October 19, 2026; prices as of October 19, 2026.
Leaders by task
- Best AI model for codingClaude Opus 5.5Anthropic
FrontierCode v1.1: 54.6%
Full ranking - Best AI model for agentsClaude Opus 5.5Anthropic
Terminal-Bench 4.0: 65.15%
Full ranking - Best AI model for computer useClaude Opus 5Anthropic
OSWorld 2.0: 70.6% (vendor-reported)
Full ranking - Best AI model for web researchGPT-6 AstraOpenAI
BrowseComp: 91.5% (vendor-reported)
Full ranking - Best AI model for reasoningClaude Opus 5.5Anthropic
Humanity's Last Exam (tools): 67.7% (vendor-reported)
Full ranking - Best cheap AI modelGLM-5.3 FlashZ.ai (Zhipu AI)
TFII 62.8, $0.15 / $0.50 per 1M tokens
Full ranking - Best AI model for long contextClaude Opus 5.5Anthropic
TFII 97.1, 1M tokens
Full ranking
Best overall
Top five on the TensorFeed Intelligence Index, a 0 to 100 composite of public benchmarks, as of October 19, 2026 (methodology 1.4, 2026 benchmark set).
| # | Model | Provider | TFII |
|---|---|---|---|
| 1 | Claude Opus 5.5 | Anthropic | 97.1 |
| 2 | Claude Sonnet 5.5 | Anthropic | 93.7 |
| 3 | Claude Fable 5.1 | Anthropic | 89.9 |
| 4 | Claude Opus 5 | Anthropic | 83.9 |
| 5 | GPT-6 Astra | OpenAI | 83.3 |
Full ranking and methodology on the Intelligence Index page.
Questions
What is the best AI model?
As of October 19, 2026, the best AI model overall is Claude Opus 5.5 (Anthropic), first on the TensorFeed Intelligence Index with 97.1 out of 100 among the 17 models ranked on the 2026 benchmark set. By task, Claude Opus 5.5 leads coding, agents and reasoning; Claude Opus 5 leads computer use; and GPT-6 Astra leads web research.
What is the best AI model for coding?
The best AI model for coding on current benchmarks is Claude Opus 5.5 (Anthropic): as of October 19, 2026 it has the highest FrontierCode v1.1 score TensorFeed tracks, 54.6%, 1.1 points ahead of Claude Fable 5 (53.5%), among 30 models scored. The top four sit within 1.3 points of each other. It also leads Terminal-Bench 4.0 (65.2%).
What is the best AI model for AI agents?
The best AI model for agents on current benchmarks is Claude Opus 5.5 (Anthropic): as of October 19, 2026 it has the highest Terminal-Bench 4.0 score TensorFeed tracks, 65.2%, 1 point ahead of Claude Sonnet 5.5 (64.1%), among 38 models scored. It also leads FrontierCode v1.1 (54.6%).
What is the best AI model for computer use?
The best AI model for computer use on current benchmarks is Claude Opus 5 (Anthropic): as of October 19, 2026 it has the highest OSWorld 2.0 score TensorFeed tracks, 70.6% (vendor-reported), 4.5 points ahead of Claude Fable 5 (66.1%), among 11 models scored. On Terminal-Bench 4.0, Claude Opus 5.5 leads (65.2%). Claude Opus 5.5, Claude Sonnet 5.5, Claude Fable 5.1 and GPT-6 Astra have no OSWorld 2.0 score yet, so they are not ranked here.
What is the best AI model for web research?
The best AI model for web research on current benchmarks is GPT-6 Astra (OpenAI): as of October 19, 2026 it has the highest BrowseComp score TensorFeed tracks, 91.5% (vendor-reported), 0.3 points ahead of Kimi K3 (91.2%, vendor-reported), among 13 models scored. The top four sit within 1.1 points of each other, and every BrowseComp figure is self-reported, so treat that as a near tie. On Humanity's Last Exam (tools), Claude Opus 5.5 leads (67.7%, vendor-reported). Claude Opus 5.5, Claude Sonnet 5.5 and Claude Fable 5.1 have no BrowseComp score yet, so they are not ranked here.
What is the best AI model for reasoning?
The best AI model for reasoning on current benchmarks is Claude Opus 5.5 (Anthropic): as of October 19, 2026 it has the highest Humanity's Last Exam (tools) score TensorFeed tracks, 67.7% (vendor-reported), 2.7 points ahead of Claude Fable 5.1 (65%, vendor-reported), among 16 models scored. On GPQA Diamond, GPT-6 Astra leads (96%, vendor-reported).
What is the best cheap AI model?
As of October 19, 2026, the best cheap AI model TensorFeed tracks is GLM-5.3 Flash from Z.ai (Zhipu AI), the highest-scoring budget-tier model on the TensorFeed Intelligence Index's 2026 benchmark set (62.8), at $0.15 input and $0.50 output per 1M tokens. The lowest-priced budget model is Nemotron 3.5 Lightning from NVIDIA, at $0.08 input and $0.20 output per 1M tokens. TensorFeed lists 18 budget-tier models in all.
What is the best AI model for long context?
As of October 19, 2026, the largest context window TensorFeed tracks is Llama 4 Scout from Meta, at 10M tokens, an open-weights model. Among models with a list price, the largest is 1.05M tokens (GPT-6 Astra, GPT-6.1 Sol, GPT-6 Sol and GPT-6 Luna). Of the 61 models with a window of 1M tokens or more, Claude Opus 5.5 scores highest on the TensorFeed Intelligence Index's 2026 benchmark set (97.1), so it is the pick here.