GPT OSS 20B High: API Pricing, Context Window & Benchmarks
GPT OSS 20B High is a language model from OpenAI, released in August 2025.
GPT-OSS-20B High provides enhanced reasoning capabilities with high-effort thinking for complex problems. This variant offers deeper analysis and more thorough responses compared to the base model, making it ideal for challenging tasks
GPT OSS 20B High benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
How GPT OSS 20B High performs across real-world prompt categories.
Performance by conversation depth
How GPT OSS 20B High holds up as conversations get longer.
Quality Tracker
GPT OSS 20B High Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Mon Aug 24 2026GPT OSS 20B High pricing
Providers
GPT OSS 20B High starts at $0.100 per million input tokens and $0.500 per million output tokens via OpenAI.
| Provider | Input $/M | Cached input $/M | Output $/M | Context in / out | TTFT p95 s | Output p5 c/s | Modalities in / out |
|---|---|---|---|---|---|---|---|
 OpenAI | $0.100 | — | $0.500 | 131.1K/131.1K | 6.50 | — | / |
Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.
GPT OSS 20B High model size
GPT OSS 20B High has 20.9 billion parameters. See how it compares to other models in the same parameter range.
GPT OSS 20B High context window
Input and output token limits for GPT OSS 20B High, plus how it ranks on long-context understanding.
GPT OSS 20B High latency
GPT OSS 20B High time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.
GPT OSS 20B High examples
Recent arena outputs from GPT OSS 20B High, picked from the highest-ranked matchups.
GPT OSS 20B High license
GPT OSS 20B High is released under the Apache 2.0 license, which permits commercial use, has 20.9B parameters.
- License
- Apache 2.0
- Commercial use allowed
- Parameters
- 20.9B
Apache License 2.0 - allows commercial use
GPT OSS 20B High resources
Official sources for GPT OSS 20B High: official playground, paper or system card, official launch post, source repository, model weights.
GPT OSS 20B High vs other models
The most-compared alternatives to GPT OSS 20B High are GPT-5.1 Medium, Seed 2.0 Pro, LongCat-Flash-Thinking-2601. Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like GPT OSS 20B High
Models ranked just above and below GPT OSS 20B High by LLM Stats score.
FAQ
Common questions about GPT OSS 20B High.