Agent Leaderboard — October 2026

Dynamic ranking based on real sessions in Agent Mode. Measures how well each model orchestrates tools, completes autonomous tasks and responds to user corrections.

In this update the whole podium is available in AIDeskPro: Claude Opus 5.5 in first place, then GPT 6 Astra and Claude Fable 5.1. The news we are happiest about is Gemini 4 Argon, fifth overall with the lowest tool hallucination rate in the entire ranking and a cost per task about one sixth of the leader’s: for everyday agentic work it is the model with the best balance between quality and cost among the top entries. Every model in the table also powers the AI agents for business in AIDeskPro: pick the model per configuration or execution.

Agent Leaderboard 19 October 2026 Fonte: arena.ai/leaderboard/agent
✦ Disponibile in AIDeskPro
✦ AIDeskPro
2
GPT 6 Astra (Max)
OpenAI
14.13%
✦ AIDeskPro
1
Claude Opus 5.5 (Max)
Anthropic
18.88%
✦ AIDeskPro
3
Claude Fable 5.1 (Max)
Anthropic
14.03%
#ModelloNet Impr.ConfirmedPraiseSteer.Bash Rel.Halluc. ↓
1✦ Claude Opus 5.5 (Max) Anthropic
▲ 18.88%
20.31%39.93%16.40%15.42%0.60%
2✦ GPT 6 Astra (Max) OpenAI
▲ 14.13%
12.06%31.14%14.78%9.98%0.62%
3✦ Claude Fable 5.1 (Max) Anthropic
▲ 14.03%
15.73%27.15%14.55%10.24%0.60%
4✦ GPT 6.1 Sol (Max) OpenAI
▲ 13.60%
13.77%31.75%13.85%2.35%0.67%
5✦ Gemini 4 Argon (High) Google
▲ 13.23%
14.17%30.56%15.92%▼ 2.48%0.10%
6✦ Claude Sonnet 5.5 (Max) Anthropic
▲ 12.99%
21.13%18.44%11.69%13.35%0.50%
7✦ GPT 6 Sol (Max) OpenAI
▲ 10.31%
8.98%20.00%11.47%10.93%0.48%
8✦ Claude Opus 5 (Max) Anthropic
▲ 8.68%
12.26%13.39%6.94%11.72%0.62%
9✦ Claude Fable 5 (High) Anthropic
▲ 8.18%
4.45%15.39%10.41%11.85%0.64%
10✦ GPT 5.6 Sol (xHigh) OpenAI
▲ 7.08%
2.76%14.23%8.21%12.20%0.54%
11Muse Wonder (Max) Meta
▲ 4.94%
9.51%4.41%5.16%5.73%0.26%
12✦ Claude Sonnet 5 (High) Anthropic
▲ 4.58%
1.08%4.77%6.69%15.41%0.37%
13MiMo V2.6 Pro Xiaomi
▲ 3.95%
7.89%5.56%2.40%4.11%0.12%
14Muse Spark 1.3 (Max) Meta
▲ 3.82%
5.51%4.32%5.49%2.60%0.58%
15✦ Gemini 3.8 Flash (High) Google
▲ 3.75%
4.25%4.45%2.07%11.14%0.53%
16✦ Grok 4.7 (xHigh) SpaceXAI
▲ 3.21%
6.84%2.95%▼ 0.52%9.15%0.59%
17✦ GPT 5.5 (xHigh) OpenAI
▲ 3.14%
▼ 2.51%6.43%3.09%13.19%0.52%
18✦ GPT 6 Luna (Max) OpenAI
▲ 3.01%
1.08%0.70%5.94%10.74%0.47%
19✦ DeepSeek V4.1 Flash (Max) DeepSeek
▲ 2.74%
7.01%3.20%1.84%▼ 0.44%0.48%
20Hy4 preview Tencent
▲ 2.68%
5.97%4.76%2.20%▼ 2.09%0.17%
21MiMo V2.6 Flash Xiaomi
▲ 2.60%
7.73%2.92%5.01%▼ 1.45%3.24%
22✦ GLM 5.2 (Max) Z.ai
▲ 2.26%
3.25%6.52%1.48%▼ 3.48%0.65%
23✦ Kimi K3 (Max) Moonshot
▲ 1.93%
6.03%2.27%0.55%▼ 1.64%0.67%
24✦ GLM 5.3 (Max) Z.ai
▲ 1.78%
3.61%5.73%0.33%▼ 4.54%0.62%
25✦ Qwen3.8 Max Alibaba
▲ 1.76%
4.45%1.66%2.02%1.13%0.79%
26✦ Claude Haiku 5.5 (High) Anthropic
▲ 1.49%
1.60%▼ 3.56%5.50%7.87%0.74%
27✦ GPT 5.4 (High) OpenAI
▲ 1.43%
▼ 4.84%▼ 1.28%7.17%10.10%0.36%
28✦ Grok 4.6 (xHigh) SpaceXAI
▲ 0.89%
▼ 0.99%▼ 1.02%0.85%9.27%0.55%
29✦ GPT 5.6 Terra (xHigh) OpenAI
▲ 0.37%
▼ 4.17%1.69%2.75%1.94%0.43%
30✦ DeepSeek V4 Pro (High) DeepSeek
▲ 0.16%
▼ 1.87%0.44%0.52%2.22%0.50%
31✦ GPT 5.5 OpenAI
▼ 0.21%
▼ 6.57%2.55%▼ 0.78%6.76%0.46%
32✦ Gemini 3.7 Flash (High) Google
▼ 0.72%
▼ 1.13%▼ 2.75%▼ 3.20%6.86%0.40%
33✦ GLM 5.3 Flash Z.ai
▼ 1.16%
3.24%▼ 1.18%▼ 3.01%▼ 9.79%0.61%
34Step 5 Preview StepFun
▼ 1.41%
0.11%▼ 3.37%1.15%▼ 9.80%0.66%
35✦ GPT 5.6 Luna (xHigh) OpenAI
▼ 2.05%
▼ 6.50%▼ 5.14%▼ 1.61%7.18%0.45%
36✦ Qwen3.8 Flash Next Alibaba
▼ 2.87%
2.44%▼ 3.75%▼ 1.35%▼ 18.98%0.75%
37✦ Qwen3.8 27B Alibaba
▼ 3.43%
▼ 1.06%▼ 5.41%▼ 3.71%▼ 10.16%0.19%
38Beam 1.0 Reflection
▼ 3.67%
▼ 6.65%▼ 2.08%▼ 4.75%▼ 3.88%1.12%
39✦ Gemini 3.1 Pro Preview Google
▼ 4.00%
▼ 10.59%▼ 1.71%▼ 6.12%1.15%0.15%
40Mistral Large 4 Mistral
▼ 4.03%
0.63%▼ 2.93%1.02%1.26%17.46%
41Hy3 Tencent
▼ 6.00%
▼ 11.00%▼ 6.29%0.00%▼ 11.28%4.07%
42✦ Qwen3.7 Max Alibaba
▼ 6.26%
▼ 8.94%▼ 11.12%▼ 10.89%5.61%0.02%
43Muse Spark 1.2 (xHigh) Meta
▼ 6.41%
▼ 7.61%▼ 11.46%▼ 8.36%▼ 3.30%0.22%
44Muse Spark 1.1 Meta
▼ 6.43%
▼ 5.04%▼ 11.36%▼ 11.49%▼ 2.41%0.15%
45✦ Qwen3.7 Plus Alibaba
▼ 6.73%
▼ 8.67%▼ 9.77%▼ 10.41%▼ 0.30%1.31%
46MiMo V2.5 Pro Xiaomi
▼ 8.01%
▼ 8.98%▼ 14.21%▼ 12.05%0.47%1.02%
47MiniMax M3 MiniMax
▼ 8.31%
▼ 13.97%▼ 14.78%▼ 9.14%1.75%0.36%
48Nemotron 3 Ultra Nvidia
▼ 8.89%
▼ 19.31%▼ 6.02%▼ 11.85%▼ 3.12%1.26%
49Mistral Medium 3.5 Mistral
▼ 11.72%
▼ 16.99%▼ 17.42%▼ 11.46%▼ 5.42%4.17%
50Inkling Thinking Machines
▼ 14.35%
▼ 23.15%▼ 22.82%▼ 18.45%0.75%0.52%
51Inkling Small Thinking Machines
▼ 15.13%
▼ 26.03%▼ 23.02%▼ 19.96%4.32%1.25%
52Solar Pro 4 Upstage
▼ 20.06%
▼ 27.26%▼ 21.96%▼ 15.30%▼ 47.74%1.87%

Cloud Providers

AIDeskPro as a service always resides in Europe. All default actions in the Tool use LLMs with EU data residency and zero data retention. Within the Tool, some models with global endpoints are also available, labelled “No EU”: you can choose them knowingly for non-critical operations. Here are the cloud partners that allow us to offer the best models on the market.

Google Cloud & Model Garden

As a Google Premier Partner we guarantee data hosted in Italy (Milan) or in Europe, access to Gemini in all versions and to Anthropic models via Model Garden, with zero data retention.
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Anthropic

Claude models (Sonnet, Opus, Haiku, Fable) are available in AIDeskPro via Google Model Garden with EU residency guarantee and no use of data for training for paid versions.
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OpenAI

GPT models are available through an Enterprise agreement with Zero Data Retention and European Data Residency. These guarantees do not apply to consumer ChatGPT accounts.
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AWS — Amazon Web Services

AIDeskPro can be deployed on AWS in European Regions (Frankfurt, Ireland, Stockholm) with Amazon Bedrock integration, GDPR compliance and enterprise certifications.
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Scaleway

100% European cloud provider with data centres in Paris, Amsterdam and Warsaw. Ideal for companies with European digital sovereignty requirements, powered by renewable energy.
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Nebius AI

Next-generation AI cloud platform with H100/H200 GPUs, data centres in Europe (Helsinki, Amsterdam). Ideal for open source models (Llama, Mistral, Qwen…) in a private environment.
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Control and transparency on privacy

AIDeskPro gives you full visibility into where your data is processed. For each model, you know exactly which endpoint is used:

EU DATA RESIDENCY

AIDeskPro as a service always runs in Europe. All default actions use LLMs with European endpoints and guaranteed data residency. Within the Tool, models with global endpoints are also available: they are explicitly labelled “No EU” and are always an active user choice - never the default.

ZERO DATA RETENTION

No provider uses your data, documents or conversations to train their models. Contractual guarantee with all partners.

ENTERPRISE AGREEMENTS

All providers we work with have Enterprise agreements with Open Gate, with specific clauses on privacy, security and GDPR compliance.

Need a specific provider?