gpt-oss-20b vs flint

Specs, VRAM requirements and download trends — updated 24 October 2026.

openai · A · Open weights
Params
21.5 B
Context
131,072
30d
5.7 M
apache-2.0 · commercial OK
RecursiveSI · B · Open weights
Params
39.8 B
Context
262,144
30d
2 K
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification gpt-oss-20b flint
Deployment Open weights · also via API Open weights · also via API
Parameters 21.5 B 39.8 B
Architecture GptOssForCausalLM FlintForCausalLM
Context length 131,072 262,144
Licence apache-2.0 apache-2.0
Commercial use Allowed Allowed
Languages — —
Downloads 30d 5,656,843 1,904
Downloads all time 105.0 M 2 K
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated No No
First seen on the Hub 2025-08-04 2026-10-21
API input price / 1M tokens $0.018 Free
API output price / 1M tokens $0.09 Free
Est. cost per 1M input + 1M output tokens $0.11 Free
Cached input / 1M tokens $0.009 —
AA Intelligence Index 10 —
AA Coding Index — —
AA Agentic Index — —
Max output tokens 32,768 235,929
API providers 10 —
Tool calling Yes Yes
Reasoning mode Yes Yes

API cost

Estimated cost of 1M input + 1M output tokens via OpenRouter

gpt-oss-20b $0.11
flint Free

Download trend

Daily snapshots, last 89 days (28 Jul – 24 Oct)

8.6 M0
gpt-oss-20b flint

VRAM side by side

On RTX 4090 · 24 GB · 8K context unless noted

gpt-oss-20b · fp16 @ 128K ctx 82.4 GB / 24 GB
❌ Won’t fit
flint · fp16 @ 256K ctx 279.0 GB / 24 GB
❌ Won’t fit

Adjacent comparisons