Which model is best for agentic computer use in August 2026?

On vendor benchmarks, Alibaba's Qwen3.8-Max leads OSWorld-Verified at 86.1, ahead of GPT-5.6 Sol Max (83.2) and Fable 5 (85.0), as of its August 3, 2026 launch. But those are Alibaba's own numbers with no independent OSWorld replication yet. For proven, production-grade agents today, Claude Opus 5 ($5/$25) and GPT-5.6 Sol ($5/$30) remain the safer picks; Qwen3.8-Max is the open-weight challenger to watch.

Is Qwen3.8-Max really better than GPT-5.6 Sol?

On paper, on agentic benchmarks Alibaba claims. Qwen3.8-Max reports OSWorld-Verified 86.1, Terminal-Bench 2.1 86.6, and SWE-bench Pro 67.7. These beat several GPT-5.6 Sol tier scores in Alibaba's table, but as of August 5, 2026 there is no third-party confirmation, and a full model card lagged the launch. Treat the lead as unverified marketing until independent evals land.

What does each model cost per million tokens?

Claude Opus 5 is $5 input / $25 output. GPT-5.6 Sol is $5 / $30 (Sol Ultra $12.50 / $75). Qwen3.8-Max API pricing was still TBD at its August 3, 2026 launch; open weights were promised the following week, so self-hosting a 2.4T MoE (heavy GPU cost) is the alternative path.

Quick Answer

Qwen3.8-Max vs GPT-5.6 Sol vs Opus 5 (Aug 2026)

Published: August 5, 2026

The Short Answer

For agentic computer use in August 2026, Qwen3.8-Max (Alibaba, Aug 3) posts the top claimed OSWorld-Verified score (86.1), edging GPT-5.6 Sol and matching/leading Claude Opus 5 on paper. But those are vendor numbers. For agents you can trust in production today, Claude Opus 5 and GPT-5.6 Sol are the proven picks. Qwen3.8-Max is the open-weight wildcard.

Side-by-Side

	Qwen3.8-Max	GPT-5.6 Sol	Claude Opus 5
Vendor	Alibaba	OpenAI	Anthropic
Type	Open-weight (dropping ~week of Aug 10)	Closed	Closed
OSWorld-Verified*	86.1	83.2 (Sol Max)	—
Terminal-Bench 2.1*	86.6	—	—
SWE-bench Pro*	67.7	—	—
API price (in/out per MTok)	TBD	$5 / $30	$5 / $25
Launched	Aug 3, 2026	Jul 2026	Jul 24, 2026

*All Qwen3.8-Max figures are Alibaba-reported, unverified independently as of Aug 5, 2026.

How To Choose

Production agents you can trust today → Claude Opus 5 (durable long-horizon runs, self-verification) or GPT-5.6 Sol (Ultra mode subagents, strong tool use). Both are battle-tested with public pricing.
Bleeding-edge agentic benchmarks + open weights → Qwen3.8-Max, once the weights actually ship and someone reruns OSWorld-Verified. At 2.4T MoE it’s the largest open model disclosed, tuned for agentic computer use.
Cheapest path per token → Opus 5 ($5/$25) undercuts Sol on output. Qwen3.8-Max may be cheaper via API once priced, but self-hosting 2.4T isn’t cheap.

The Trade-Off

Claimed vs proven: Alibaba’s OSWorld/Terminal-Bench lead is impressive but self-reported. Sol and Opus 5 have a track record.
Open vs closed: Qwen3.8-Max offers self-hosting and data control; Sol/Opus 5 give managed reliability, safety tooling, and no GPU capex.
Availability: Sol and Opus 5 are one API key away. Qwen3.8-Max’s open weights were “next week” at launch — verify the real drop and license.

Watch Outs

No independent OSWorld-Verified replication for Qwen3.8-Max yet (as of Aug 5, 2026).
Model card lagged the launch — some rankings are internal evals.
Don’t rebuild a working Opus 5 / Sol agent stack on vendor benchmark slides.

Verdict

Proven agentic pick today → Claude Opus 5 or GPT-5.6 Sol
Top claimed benchmarks / open-weight challenger → Qwen3.8-Max (pending independent evals)

Sources

VentureBeat — Qwen3.8-Max agentic claims: venturebeat.com
MarkTechPost — Qwen3.8-Max release: marktechpost.com
Anthropic — Claude models: anthropic.com/claude