FlexGPT
ChatGPT for pros. Internet access. Memory. No subscriptions.
SIMA 2
Google's most capable AI agent for virtual 3D worlds
Updated February 2026
| FlexGPT | SIMA 2 | |
|---|---|---|
| Rating | 3.8★ | 5.0★ |
| Reviews | 8 | 11 |
| Pros | 10 | 8 |
| FactScore™ | 35.8 | 54 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in FlexGPT — Pros
Memory feature No subscriptions Sophisticated AI Web browsing capabilities Credit system Document upload Easy to use interface Internet access Pay as you go Unlimited rate limitBoth tools — Pros
—Only in SIMA 2 — Pros
Large context window GCP integration Multimodal capabilities Personalized insights Predictive analytics Trend detection Video input support Video understandingOnly in FlexGPT — Cons
Unfinished UI Cannot edit past messages Crashes frequently Manual send button Page reloads Poor build quality Web browsing capabilitiesBoth tools — Cons
—Only in SIMA 2 — Cons
—Details
| FlexGPT | SIMA 2 | |
|---|---|---|
| Categories | LLMs | LLMs |
| Platforms | Web | Web |
| Became Popular | April 30, 2023 | November 14, 2025 |
| Website | flexgpt.io | goo.gle |
Who Should Pick Which?
Choose FlexGPT if...
- Memory feature
- No subscriptions
- Sophisticated AI
Choose SIMA 2 if...
- Large context window
- GCP integration
- Multimodal capabilities
With a FactScore™ of 35.8 vs 54, SIMA 2 leads in community reception. FlexGPT uniquely offers Memory feature and No subscriptions, while SIMA 2 stands out for Large context window and GCP integration.
What Users Say
FlexGPT
Seems good one
not very good. great concept and I hope it improves but as of now it barely works. 90% of the time I enter a prompt the page just reloads and nothing happens. Also I have to physically click the se...
really cool and works great . the memory feature is really solid . already I have become a paid costumer . my suggestion is add ability to see the elements in the memory by clicking on them so we c...
SIMA 2
With a 1M token context window, we use Gemini to collate data across companies with huge article libraries to detect trends and power predictive sales analytics to power Claude Opus.
Gemini 1.5 Pro offers long context, smart code gen, and seamless GCP integration—ideal for QA.
The only model that supports video input today, up to 50 minutes, so the only multi-modal model that enables this on the planet. Not even openAI or Anthropic supports this yet.
Related Comparisons
Frequently Asked Questions
Which is better, FlexGPT or SIMA 2?
Based on FactScore™, SIMA 2 leads with a score of 54 vs 35.8. SIMA 2 has a higher rating of 5.0★ compared to 3.8★.
What are the pros of FlexGPT compared to SIMA 2?
FlexGPT uniquely offers: Memory feature, No subscriptions, Sophisticated AI, Web browsing capabilities, Credit system.
What are the pros of SIMA 2 compared to FlexGPT?
SIMA 2 uniquely offers: Large context window, GCP integration, Multimodal capabilities, Personalized insights, Predictive analytics.
Is FlexGPT better rated than SIMA 2?
FlexGPT is rated 3.8★ from 8 reviews. SIMA 2 is rated 5.0★ from 11 reviews.
What is the FactScore™ of FlexGPT and SIMA 2?
FactScore™ weighs rating and review volume together. FlexGPT scores 35.8 and SIMA 2 scores 54.
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