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Haiku 4.5 vs MiniMax M2.1: Comparative Analysis of Agent Task Benchmark Tests

Jesutofunmie's open-source comparative evaluation project systematically tested the performance of Anthropic Haiku 4.5 and MiniMax M2.1 models on Agent tasks, revealing differences in their design thinking and execution skills in multi-round workflows, and providing data references for developers to select appropriate Agent models.

HaikuMiniMaxAgent评测模型对比多轮对话工具调用AnthropicAI基准测试
Published 2026-04-05 11:15Recent activity 2026-04-05 11:25Estimated read 5 min
Haiku 4.5 vs MiniMax M2.1: Comparative Analysis of Agent Task Benchmark Tests
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Section 01

Haiku4.5 vs MiniMax M2.1 Agent Task Benchmark: Core Insights

Jesutofunmie's open-source comparison project systematically tested Anthropic Haiku4.5 and MiniMax M2.1 on Agent tasks, revealing their differences in design thinking and execution skills. This provides valuable data references for developers to select suitable Agent models, covering dimensions like task understanding, tool usage, and multi-round dialogue.

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Section 02

Evaluation Background & Model Overviews

Traditional benchmarks (MMLU, HumanEval) fail to assess Agent-specific capabilities (multi-round dialogue, tool calling, error recovery). Thus, the Haiku-4.5-vs-Minimax-2.1 project was launched.

  • Haiku4.5: Lightweight Claude model, fast/low-cost, improved reasoning, suitable for latency/cost-sensitive scenarios.
  • MiniMax M2.1: Optimized for Agent tasks (Function Calling, multi-round management), strong in Chinese context. Both are widely used for Agent construction.
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Section 03

Evaluation Methodology

Systematic methods ensure comparability: Task Design: Info collection, tool usage, planning/decomposition, error recovery, multi-round coordination. Metrics: Task completion rate, efficiency (rounds/tools/tokens), quality (accuracy/completeness), user experience, error handling. Control Variables: Same prompt, tools, token budget, timeout, evaluation standards.

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Section 04

Key Findings: Design Thinking vs Execution Skills

Haiku4.5: Strong design thinking—deep task understanding, strategy planning, structured output, boundary awareness. Limitations: Conservative tool usage, occasional goal forgetting, weaker Chinese adaptation. MiniMax M2.1: Strong execution—proactive tool usage, stable multi-round state, fast response, native Chinese advantage. Limitations: Surface-level task understanding, shallow planning, fluctuating output quality.

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Section 05

Scenario-Based Model Selection

Choose Haiku4.5: Demand analysis, content generation (reports), multi-language scenarios, cost-sensitive deployment. Choose MiniMax M2.1: Tool-intensive tasks, Chinese-priority apps, real-time interaction, long-process tasks.

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Section 06

Hybrid Strategy Insights

Combining models yields better results:

  • Layered: Haiku (planning) + MiniMax (execution)
  • Routing: Design tasks → Haiku, execution → MiniMax
  • Collaboration: Two Agents complement strengths (increases complexity but boosts capability).
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Section 07

Limitations & Future Directions

Limitations: Limited vertical domain coverage (medical/legal/finance), subjective metrics (user experience), outdated results as models update, single benchmark limitations. Future: Expand task diversity, add more models (GPT-4/Claude3), automated continuous evaluation, real user feedback validation.

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Section 08

Industry Significance & Conclusion

Industry Value: Provides systematic Agent evaluation methodology, highlights 'design vs execution' divide, suggests future Agent systems may need combined specialized models. Conclusion: Haiku excels in design/structure; MiniMax in execution/Chinese. Choose based on scenario needs, not just benchmarks—monitor model updates and validate in real scenarios.