Flint vs GPT-5.5 Instant
Pricing, benchmarks, and use case comparison
Quick take
- •GPT-5.5 Instant is meaningfully stronger at speed (92 vs 7).
- •Flint is open-weights (free to self-host); GPT-5.5 Instant is paid API only.
Specs comparison
| Flint | GPT-5.5 Instant | |
|---|---|---|
| Provider | Springboards | OpenAI |
| Type | Closed source | Closed source |
| Context window | Not announced | ✓1050000 |
| Input / 1M tokens | ✓Not announced | 5.00 |
| Output / 1M tokens | Not announced | 30.00 |
| Release date | 2026-04 | 2026-05 |
Benchmarks
| Benchmark | Flint | GPT-5.5 Instant |
|---|---|---|
| Novelty Bench | 7/10 | - |
| Intra-Model Similarity | 0.721 | - |
| NoveltyBench | 7.47 | - |
| AIME 2025 | - | 81.2 |
| Terminal-Bench 2.0 | - | 82.7 |
| FrontierMath Tier 1–3 | - | 51.7 |
Scores sourced from official provider release posts and independent benchmark aggregators.
Which should you choose?
Choose Flint if...
- →When exploring diverse creative directions
- →For early-stage ideation and concept generation
- →When variety and novelty are more important than accuracy
Choose GPT-5.5 Instant if...
- →Interactive chat and everyday assistant tasks where responsiveness matters most
- →High-volume, latency-sensitive workloads that do not need deep reasoning
- →General questions, drafting, and summarization at speed