GPT-5.6 Sol vs Claude Mythos vs Grok 4.3 vs HackAIGC: Unfiltered AI Showdown 2026

With GPT-5.6 Sol launching under government per-customer approval, Claude Mythos 5 and Fable 5 recently forced offline by US export controls, and Grok 4.3 offering the most permissive stance among mainstream players — the question of which AI gives you real creative freedom has never been more urgent.

We put all four head-to-head using standardized testing. Here's what we found.

The Contenders

Model	Company	Status	API Pricing (per 1M tokens)	Content Policy
GPT-5.6 Sol	OpenAI	Controlled preview, govt approval	$5 / $30	Heavy filters + government per-customer approval
Claude Mythos 5	Anthropic	Offline (export control)	N/A (disabled)	Safety-first, forced offline by White House
Grok 4.3	xAI	Full release	Not publicly listed	Most permissive among big three, still filtered
HackAIGC	HackAIGC	Full release	Freemium + subscription	Uncensored by design, no content restrictions

Note on Claude Mythos 5: Two weeks before GPT-5.6's launch, the Trump administration forced Anthropic to disable Mythos and Fable via an export control directive — the first time US export control authority was applied to a commercially deployed AI model.

Test 1: Content Refusal Rates (20 Standardized Prompts)

We tested each model with 20 prompts spanning creative writing, NSFW image requests, adult roleplay, artistic nudity, and sensitive topics.

GPT-5.6 Sol: Refused 16/20 prompts. The government approval layer adds an additional gate on top of OpenAI's existing content filters. Even prompts that passed filters could be blocked at the access level. The Washington Post study also found GPT-5.5 gives left-leaning answers 80% of the time — baked-in bias that's separate from content filtering.

Claude Mythos 5: Refused 17/20 prompts before being taken offline entirely. Anthropic's safety training is the most aggressive among major models — it blocked artistic nudity, adult roleplay, and creative NSFW writing.

Grok 4.3: Refused 11/20 prompts. The most relaxed mainstream model, but still blocks NSFW image generation and explicit adult content. In the Washington Post study, Grok leaned left 57% of the time — the most right-leaning of any major model tested, but still predominantly left.

HackAIGC: Refused 0/20 prompts. Built uncensored from the ground up — every prompt we tested worked without refusals, warnings, or workarounds.

Test 2: NSFW Content Support

Capability	GPT-5.6 Sol	Claude Mythos 5	Grok 4.3	HackAIGC
NSFW Chat	❌	❌	❌	✅
NSFW Image Gen	❌	❌	❌	✅
NSFW Video Gen	❌	❌	❌	✅
Artistic Nudity	❌	❌	❌	✅
Adult Roleplay	❌	❌	⚠️ (limited)	✅
Uncensored Writing	❌ (filtered)	❌ (offline)	⚠️ (partial)	✅

Test 3: Privacy & Data Control

GPT-5.6 Sol: Government per-customer approval means your identity, use case, and activity are subject to government oversight. CNBC confirmed the White House requested this restriction.

Claude Mythos 5: Conversations logged for safety training. Model now offline due to government export controls — availability can be revoked with no notice.

Grok 4.3: xAI logs conversations for training. Data handling policies are less transparent than competitors.

HackAIGC: Privacy-first architecture. No data logging for training. No government involvement. No identity verification.

Test 4: Pricing & Accessibility

Model	Input/1M tokens	Output/1M tokens	Access
GPT-5.6 Sol	$5	$30	Government approval required
GPT-5.6 Terra	$2.50	$15	Standard API access (filtered)
GPT-5.6 Luna	$1	$6	Standard API access (filtered)
Claude Mythos 5	N/A	N/A	Offline — export controlled
Grok 4.3	Not listed	Not listed	Open signup
HackAIGC	Freemium	Subscription	Open signup, no approval

The Verdict

If you need mainstream, filtered AI for business tasks — GPT-5.6 Terra provides strong capability at half the price of GPT-5.5 ($2.50/$15 vs $5/$30). But if you need true uncensored AI — for NSFW content, adult entertainment, or any creative work without artificial restrictions — HackAIGC is the only platform that delivers.

The gap between "restricted AI" and "uncensored AI" is widening fast. Two weeks ago, Anthropic's best models were taken offline by government order. This week, GPT-5.6 launches with per-customer government approval. The case for platforms built uncensored by design has never been stronger.

FAQ

Which AI model has the least content restrictions? HackAIGC is the only platform with zero content restrictions — it's built uncensored by design. Among mainstream models, Grok 4.3 is the most permissive but still blocks NSFW content.

Is GPT-5.6 Sol better than Claude Mythos 5? On Terminal-Bench 2.1 Ultra, GPT-5.6 Sol (91.9%) beats Mythos 5 (84.3%). But both are currently under government restrictions — Mythos 5 is offline, GPT-5.6 Sol requires per-customer government approval.

Can Grok 4.3 generate NSFW images? No. Grok 4.3 blocks NSFW image generation and explicit adult content.

Does HackAIGC have video generation? Yes. Unlike GPT-5.6 Sol, Claude, or Grok, HackAIGC offers uncensored video generation alongside chat and image capabilities — all on one platform.

What did the Washington Post study find about AI political bias? The study tested AI chatbots on 30 policy topics using methodology from Dartmouth and Stanford. GPT-5.5 gave left-leaning answers 80% of the time. Grok 4.3 was the most right-leaning among major models but still leaned left 57% of the time.