Every plan runs Prism-1, our exclusive model built on Adaptive Fusion. Pick your levels — Swift, Balanced, Advanced, each with a + boost — plus prediction analysis, notebook workflows, and practical tools.
Payments processed securely by Stripe. Cancel anytime from your account — no lock-in, no hidden fees.
Free AI chat plus the full community. No credit card required.
Get started freeAffordable daily AI for useful work.
For power users who need Advanced reasoning.
Highest tier — every Prism-1 level, including Advanced+.
| Slate | Amber | Obsidian | Diamond | |
|---|---|---|---|---|
| Price | Free | $7/mo | $18/mo | $150/mo |
| Prism-1 levels | Swift preview | Swift, Swift+, Balanced | + Balanced+, Advanced | + Advanced+ (all 6) |
| Daily messages | 5/day free | 14/day | 23/day | 96/day |
| Long context | — | Plan-safe caps | Higher caps | Highest caps |
| Extended thinking | ✗ | Adaptive | Adaptive | Adaptive |
| AI Prediction Analyst | ✗ | 1/day | 1/day | 2/day |
| File uploads | 3 files, 5MB | 3 files, 2MB | 5 files, 5MB | 8 files, 10MB |
| Debate Arena | ✓ | ✓ | ✓ | ✓ |
| Predictions | Manual | + AI Analysis | + AI Analysis | + AI Analysis |
| Dog Breed Identifier | ✗ | 2/day | 2/day | 6/day |
| AI Guesser | ✗ | ✗ | ✓ | ✓ |
| Battle Simulator | ✗ | ✗ | ✓ | ✓ |
| Leaderboards | ✓ | ✓ | ✓ | ✓ |
Yes. You can upgrade or downgrade your plan at any time. When upgrading, you'll be charged the prorated difference. When downgrading, the change takes effect at the end of your current billing period.
We accept all major credit and debit cards through Stripe. Every payment is processed securely and encrypted by Stripe — we never see or store your card details.
Your limit resets every 24 hours. Limits are tracked per model, so you can switch to another available model if that model still has messages left.
Limits are tuned to keep OptiLM sustainable and ad-free. Each model also has plan-safe input and output caps, so prices stay low without risking negative-margin usage.
Adaptive thinking lets stronger models spend more reasoning effort on complex problems when it helps. Higher tiers unlock more of that capability for coding, analysis, research, and multi-step work.
Yes, you can cancel anytime from your account settings. You'll continue to have access to your plan until the end of your current billing period.
Free (Slate) users get a limited Prism-1 Swift preview — about 5 messages a day, with file and image uploads — plus full access to Debate Arena, Predictions, Leaderboards, and the community. The full Prism-1 level range and AI Prediction Analysis are part of the paid plans, starting at $7/month.
OptiLM runs one model: Prism-1, built on our Adaptive Fusion architecture. It routes every request to the right depth and, on + levels, fuses multiple internal drafts into one stronger answer. You choose from three levels — Swift, Balanced, and Advanced — each with a + boost, six rungs in total. Amber includes Swift, Swift+, and Balanced; Obsidian adds Balanced+ and Advanced; Diamond unlocks Advanced+, our absolute best.
Prism-1 requests are processed through OptiLM's Adaptive Fusion pipeline, which routes them to vetted enterprise AI infrastructure under strict API terms — our Privacy Policy lists the exact processors. We never sell your data, and you can contact us anytime about deletion.
Built and run by Optifusion, an independent studio.
Payments are handled entirely by Stripe — we never see your card details. Cancel anytime, no lock-in. A real person reads every message: contact us.