OpenAI: gpt-oss-20b is a 131,072-token model served on Composite at $0.0250 per million tokens in and $0.0375 per million tokens out. Ranked #122 of 179 models by traffic on Composite over the last 30 days, taking 0% of tokens and 0% of requests. Measured on Composite, 0.0% of its last 1 requests on Composite succeeded.
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Specifications
Specifications and pricing as served by Composite
Model ID
openai/gpt-oss-20b
Provider
cv11
Context window
131,072 tokens
Accepts
text
Returns
text
Input price
$0.0250 per million tokens
Output price
$0.0375 per million tokens
Prompt caching
Supported — cached input is billed at the provider's cache rate, on credits and plans alike
Thinking
Always on for this model
Moderated
No
Cost on a monthly plan
About 0.2 plan credits per typical call (8k in, 1k out)
Routing endpoints
10 (base plus 9 routing variants)
Use OpenAI: gpt-oss-20b in JanitorAI or SillyTavern
Make a Composite API key and type openai/gpt-oss-20b as the model name. JanitorAI takes the full URL https://composite.lucidity.sh/v1/chat/completions; SillyTavern, ChubAI, Agnai and RisuAI take https://composite.lucidity.sh/v1. It runs on credits, a plan, or your own provider key.
Across the last 1 requests Composite served for this model.
Routing variants
The same model behind 9 alternative endpoints. Call the id directly to pin a route; the base id above picks for you.
Route
Model ID
Provider
Price
Normal
openai/gpt-oss-20b-normal
cv11
$0.0375 per million tokens input · $0.163 per million tokens output
Normal + cheapThink
openai/gpt-oss-20b-normal:cheapThink
cv11
$0.0375 per million tokens input · $0.163 per million tokens output
Cheapest provider
openai/gpt-oss-20b:cheapest-provider
PrimeIntellect
$0.0250 per million tokens input · $0.0375 per million tokens output
Cheapest provider + cheapThink
openai/gpt-oss-20b:cheapest-provider:cheapThink
PrimeIntellect
$0.0250 per million tokens input · $0.0375 per million tokens output
cheapThink
openai/gpt-oss-20b:cheapThink
cv11
$0.0250 per million tokens input · $0.0375 per million tokens output
Fast
openai/gpt-oss-20b:fast
PrimeIntellect
$0.0250 per million tokens input · $0.0375 per million tokens output
Fast + cheapThink
openai/gpt-oss-20b:fast:cheapThink
PrimeIntellect
$0.0250 per million tokens input · $0.0375 per million tokens output
Quality
openai/gpt-oss-20b:quality
DeepInfra
$0.0375 per million tokens input · $0.175 per million tokens output
Quality + cheapThink
openai/gpt-oss-20b:quality:cheapThink
DeepInfra
$0.0375 per million tokens input · $0.175 per million tokens output
Pricing
$0.0250 per million tokens input · $0.0375 per million tokens output
Credits pay the provider’s price plus 25%; cache hits cost less.
On a monthly plan, a typical call (8k tokens in, 1k out) uses about 0.2 plan credits, at the provider's own price.
Provider
cv11
Roleplay fit
This is an OpenAI model, a dependable baseline with broad instruction-following and consistent formatting across long conversations.
Context behavior
With a 131,072-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.
Cost for regular use
It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.
From the provider
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...