Best AI Agents and Agentic Models (2026)
Compare frontier models for multi-step AI agent workflows across SWE-bench Verified, tau-bench, and MultiChallenge. Built for coding agents, tool-use agents, and long-horizon task automation.
SWE-bench Verified
Agentic coding performance on human-validated GitHub issues.
| # | Model | Score | Source |
|---|---|---|---|
| 1 | Claude Opus 4.7 Claude Opus 4.7 is Anthropic's most capable generally available model, delivering a step-change improvement in agentic coding — 13% better on an internal 93-task coding benchmark, 3x more production tasks resolved on Rakuten-SWE-Bench, and 21% fewer document reasoning errors on Databricks OfficeQA Pro versus Opus 4.6. It features a 1M token context window, 128K max output, and enhanced multimodal vision with support for up to 2,576-pixel resolution images. A new 'xhigh' adaptive thinking effort tier and improved multi-session memory round out the release. | 87.6% | swebench.com |
| 2 | GPT-5.3-Codex GPT-5.3-Codex is OpenAI's most capable agentic coding model as of February 2026, combining the Codex and GPT-5 training stacks for advanced code generation, reasoning, and general intelligence. Approximately 25% faster than its predecessors and optimized for steerable coding agents. Predecessor to GPT-5.4. No public parameter count or context window disclosed. | 85% | swebench.com |
| 3 | DeepSeek V4 Pro DeepSeek V4 Pro is the flagship 1.6T parameter (49B activated) Mixture-of-Experts language model with 1M-token context. Features hybrid attention (CSA+HCA) requiring only 27% of inference FLOPs vs DeepSeek-V3.2 at 1M context, Manifold-Constrained Hyper-Connections (mHC), and Muon Optimizer for training stability. Achieves 93.5% on LiveCodeBench, 89.8% on IMOAnswerBench, and 90.1% on MMLU. Supports Non-Think, Think High, and Think Max reasoning modes. Pricing: $1.74/1M input, $3.48/1M output (cache hit: $0.145/1M input). MIT licensed. | 80.6% | swebench.com |
| 4 | Gemini 3.1 Pro Google DeepMind's Gemini 3.1 Pro preview model (released Feb 19, 2026), refining Gemini 3 Pro with better thinking, improved token efficiency, enhanced factual consistency, and optimizations for software engineering and agentic workflows. Supports text, image, video, audio, and PDF inputs; text output only. 1M token input context window (65,536 output max). Knowledge cutoff: January 2025. Includes batch API, caching, code execution, function calling, search grounding, structured outputs, and thinking capabilities. | 80.6% | blog.google |
| 5 | Kimi K2.6 Kimi K2.6 is Moonshot AI's latest agentic reasoning model, launched April 13 2026 as a code preview for Kimi Code subscribers. Built on a 1-trillion-parameter MoE architecture (32B active, 384 experts), it inherits K2.5's 256K context window and adds enhanced reliability for long-horizon agentic workflows — supporting 200–300 sequential tool calls without drift. Optimized for coding, multi-step agent planning, and vision-assisted tasks such as processing screenshots, PDFs, and spreadsheets. | 80.2% | swebench.com |
| 6 | GPT-5.2 Enhanced GPT-5 iteration featuring adaptive reasoning and extended thinking mode. Available in instant and thinking variants. 256K context window. Achieved 80.0% on SWE-bench Verified in independent evaluations. Priced at $1.75 per 1M input tokens, $14 per 1M output tokens. | 80% | swebench.com |
| 7 | Claude Sonnet 4.6 Claude Sonnet 4.6 available on AWS Bedrock | 79.6% | swebench.com |
| 8 | Qwen3-Max Alibaba's Qwen3-Max, flagship model with improved multilingual and reasoning capabilities. | 78.8% | swebench.com |
| 9 | GLM-5 Flagship open-weight foundation model from Zhipu AI with 744B parameters (40B active per token) in Mixture of Experts architecture. Trained on 28.5T tokens using DeepSeek Sparse Attention on Huawei Ascend hardware. Achieves state-of-the-art performance on coding and agentic benchmarks (SWE-bench Verified: 77.8%). Supports autonomous planning, multi-step tool use, and self-correction. | 77.8% | swebench.com |
| 10 | Grok 4 Enhanced reasoning with long-form logic; multimodal support; live browsing and long-term memory. | 76.7% | swebench.com |
| 11 | Claude Haiku 4.5 Claude Haiku 4.5 available on AWS Bedrock | 73.3% | swebench.com |
| 12 | Grok Code Fast 1 xAI's Grok Code Fast 1 is a code-specialized Mixture-of-Experts model released August 27, 2025. Trained on programming data, pull requests, and code repositories, optimized for agentic coding tasks including tool calls, shell commands, and file editing. Supports Python, TypeScript, Rust, and other languages. Features high throughput (~92-129 tokens/sec). Proprietary, available via xAI API and select partners. | 70.8% | swebench.com |
τ-bench
Multi-turn tool use in retail and airline customer-service tasks.
| # | Model | Score | Source |
|---|---|---|---|
| 1 | Claude Sonnet 4.6 Claude Sonnet 4.6 available on AWS Bedrock | 87.5% | taubench.com |
| 2 | GLM-5 Flagship open-weight foundation model from Zhipu AI with 744B parameters (40B active per token) in Mixture of Experts architecture. Trained on 28.5T tokens using DeepSeek Sparse Attention on Huawei Ascend hardware. Achieves state-of-the-art performance on coding and agentic benchmarks (SWE-bench Verified: 77.8%). Supports autonomous planning, multi-step tool use, and self-correction. | 82.1% | taubench.com |
| 3 | Grok 4 Enhanced reasoning with long-form logic; multimodal support; live browsing and long-term memory. | 78.9% | taubench.com |
| 4 | GPT-5.4 GPT-5.4 is OpenAI's flagship frontier reasoning model, released March 5, 2026. It incorporates advances from GPT-5.3-Codex for coding and agentic workflows, and adds 'Thinking' mode with editable reasoning plans. Key capabilities include computer use (navigating interfaces via Playwright), image understanding and generation integration, full-stack web app generation, tool calling, and deep research. Knowledge cutoff is August 31, 2025. Model ID: gpt-5.4. | 78.3% | taubench.com |
| 5 | GPT-5.3-Codex GPT-5.3-Codex is OpenAI's most capable agentic coding model as of February 2026, combining the Codex and GPT-5 training stacks for advanced code generation, reasoning, and general intelligence. Approximately 25% faster than its predecessors and optimized for steerable coding agents. Predecessor to GPT-5.4. No public parameter count or context window disclosed. | 77.8% | taubench.com |
| 6 | Qwen3-Max Alibaba's Qwen3-Max, flagship model with improved multilingual and reasoning capabilities. | 76.8% | taubench.com |
| 7 | Gemini 3.1 Pro Google DeepMind's Gemini 3.1 Pro preview model (released Feb 19, 2026), refining Gemini 3 Pro with better thinking, improved token efficiency, enhanced factual consistency, and optimizations for software engineering and agentic workflows. Supports text, image, video, audio, and PDF inputs; text output only. 1M token input context window (65,536 output max). Knowledge cutoff: January 2025. Includes batch API, caching, code execution, function calling, search grounding, structured outputs, and thinking capabilities. | 76.5% | taubench.com |
| 8 | GPT-5.2 Enhanced GPT-5 iteration featuring adaptive reasoning and extended thinking mode. Available in instant and thinking variants. 256K context window. Achieved 80.0% on SWE-bench Verified in independent evaluations. Priced at $1.75 per 1M input tokens, $14 per 1M output tokens. | 75.1% | taubench.com |
| 9 | Kimi K2.5 Moonshot Kimi K2.5 available on AWS Bedrock | 74.2% | taubench.com |
| 10 | Gemini 3 Flash Speed-optimized Gemini 3 model from Google DeepMind with frontier intelligence. Combines high performance with lower cost and latency. 1M token context window. | 71.5% | taubench.com |
| 11 | Mistral Large 3 675B Instruct Mistral Large 3 available on AWS Bedrock | 70.2% | taubench.com |
| 12 | Llama 4 Maverick 17B Instruct FP8 Meta's Llama 4 Maverick 17B with 128 experts, FP8-optimized for cost-efficient inference. Supports native Model Router integration on Microsoft Foundry. | 68.5% | taubench.com |
| 13 | Llama 4 Scout 17B-16E Instruct Meta's Llama 4 Scout is a 17-billion parameter mixture-of-experts model with 16 expert routing. Optimized for efficient inference on edge and cloud environments with strong multi-turn conversation capabilities. Available on Cloudflare Workers AI. | 62.3% | taubench.com |
MultiChallenge
Multi-turn instruction retention, memory, editing, and self-coherence.
| # | Model | Score | Source |
|---|---|---|---|
| 1 | Gemini 3.1 Pro Google DeepMind's Gemini 3.1 Pro preview model (released Feb 19, 2026), refining Gemini 3 Pro with better thinking, improved token efficiency, enhanced factual consistency, and optimizations for software engineering and agentic workflows. Supports text, image, video, audio, and PDF inputs; text output only. 1M token input context window (65,536 output max). Knowledge cutoff: January 2025. Includes batch API, caching, code execution, function calling, search grounding, structured outputs, and thinking capabilities. | 71.4% | labs.scale.com |
| 2 | GPT-5.4 GPT-5.4 is OpenAI's flagship frontier reasoning model, released March 5, 2026. It incorporates advances from GPT-5.3-Codex for coding and agentic workflows, and adds 'Thinking' mode with editable reasoning plans. Key capabilities include computer use (navigating interfaces via Playwright), image understanding and generation integration, full-stack web app generation, tool calling, and deep research. Knowledge cutoff is August 31, 2025. Model ID: gpt-5.4. | 69.2% | labs.scale.com |
| 3 | Kimi K2.5 Moonshot Kimi K2.5 available on AWS Bedrock | 61.4% | labs.scale.com |
| 4 | Gemini 3.1 Flash Lite Preview Google: Gemini 3.1 Flash Lite Preview available via OpenRouter. Pricing: $0.25/1M input, $1.5/1M output. | 60.6% | labs.scale.com |
| 5 | Claude Opus 4.7 Claude Opus 4.7 is Anthropic's most capable generally available model, delivering a step-change improvement in agentic coding — 13% better on an internal 93-task coding benchmark, 3x more production tasks resolved on Rakuten-SWE-Bench, and 21% fewer document reasoning errors on Databricks OfficeQA Pro versus Opus 4.6. It features a 1M token context window, 128K max output, and enhanced multimodal vision with support for up to 2,576-pixel resolution images. A new 'xhigh' adaptive thinking effort tier and improved multi-session memory round out the release. | 58.6% | labs.scale.com |
| 6 | Claude Sonnet 4.6 Claude Sonnet 4.6 available on AWS Bedrock | 57.1% | labs.scale.com |
| 7 | Claude Haiku 4.5 Claude Haiku 4.5 available on AWS Bedrock | 50.5% | labs.scale.com |
| 8 | o4-mini Fast and cost-efficient reasoning model with vision support for math, coding, and visual understanding. Retired from ChatGPT February 13, 2026 but still available via API. Released April 16, 2025. | 44.9% | labs.scale.com |
| 9 | Qwen3-Max Alibaba's Qwen3-Max, flagship model with improved multilingual and reasoning capabilities. | 41.2% | labs.scale.com |