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OpenAI
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gpt-oss-20b
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Open weights model

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Released August 2025

gpt-oss-20b (low) API Provider Benchmarking & Analysis

Model Comparison

This analysis is intended to support you in choosing the best API provider of gpt-oss-20b (low) for your use-case.

Fastest

#1
GroqGroq
923.2 t/s
#2
Google VertexGoogle Vertex
189.1 t/s
#3
AmazonAmazon
167.0 t/s
#4
NovitaNovita
117.9 t/s
#5
CoreWeaveCoreWeave
75.4 t/s

Output speed

Total 8 providers

Lowest Latency

#1
GroqGroq
2.99 s
#2
NovitaNovita
18.17 s
#3
Google VertexGoogle Vertex
19.25 s
#4
AmazonAmazon
23.15 s
#5
CoreWeaveCoreWeave
27.49 s

Time to first answer token

Total 8 providers

Lowest Price

#1
CoreWeaveCoreWeave
$0.04
#2
NovitaNovita
$0.05
#3
Lightning AILightning AI
$0.07
#4
Google VertexGoogle Vertex
$0.09
#5
AmazonAmazon
$0.09

Blended price (per 1M tokens)

Total 8 providers

gpt-oss-20b (low) is available through 8 API providers, each offering different performance characteristics and pricing. Below is a comparison of the key metrics across providers.

  • For output speed, the top providers are Groq (923.2 t/s), Google Vertex (189.1 t/s), and Amazon (167.0 t/s). Speed varies significantly across providers, with a 1125% difference between the fastest and slowest.
  • For latency, Groq (2.99s), Novita (18.17s), and Google Vertex (19.25s) offer the lowest time to first answer token.
  • For pricing, CoreWeave (0.04), Novita (0.05), and Lightning AI (0.07) offer the lowest blended prices per 1M tokens. Prices vary up to 5.3x across providers.
  • Groq offers the best performance with both the highest speed and lowest latency. For cost optimization, CoreWeave provides the most competitive pricing.

Highlights

Speed

Output tokens per second · Higher is better

End-to-End Response Time

Seconds · Lower is better

Price

USD per 1M tokens (blended) · Lower is better

Update: Default performance benchmarking workload has updated to 10k input tokens to better reflect production use cases. You can still select different workloads above.

Pricing

Pricing: Cache Hit, Input, and Output

Price (USD per M Tokens) · Lower is better · 10,000 input tokens

Price per token for cached prompts (previously processed), typically offering a significant discount compared to regular input price, represented as USD per million tokens. The values shown here are the cache hit price; cache write and cache storage are billed separately and vary by provider — see "Cache pricing by provider" for detail.

Pricing: Blended Price

Blended at 7:2:1 (cache-input-output) · USD per 1M tokens (blended) · Lower is better

Price per token, shown in USD per million tokens. Price is a blend of cache hit, input, and output token prices using the selected ratio (default 7:2:1 cache-input-output).

Output Speed vs. Price

Blended at 7:2:1 (cache-input-output) · Output speed: output tokens per second · USD per 1M tokens (blended)
Most attractive quadrant
Pareto line

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Speed

Measured by Output Speed (tokens per second)

Output Speed: gpt-oss-20b (low)

Output speed: output tokens per second · 10,000 input tokens

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Figures represent performance of the model's first-party API (e.g. OpenAI for o1) or the median across providers where a first-party API is not available (e.g. Meta's Llama models).

Latency vs. Output Speed

Latency: seconds to first token received · Output speed: output tokens per second · 10,000 input tokens
Most attractive quadrant

Tokens per second received while the model is generating tokens (ie. after first chunk has been received from the API for models which support streaming).

Latency

Measured by Time (seconds) to First Token

Time to First Answer Token

Seconds to first token received · Lower is better · 10,000 input tokens

Time to first answer token received, in seconds, after API request sent. For reasoning models, this includes the 'thinking' time of the model before providing an answer. For models which do not support streaming, this represents time to receive the completion.

Figures represent median (P50) measurement over the past 72 hours to reflect sustained changes in performance.

End-to-End Response Time

Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed

End-to-End Response Time

Seconds to output 500 tokens, including reasoning model 'thinking' time · Lower is better · 10,000 input tokens

Seconds to receive a 500 token response. Key components:

  • Input time: Time to receive the first response token
  • Thinking time (only for reasoning models): Time reasoning models spend outputting tokens to reason prior to providing an answer. Amount of tokens based on the average reasoning tokens across a diverse set of 60 prompts (methodology details).
  • Answer time: Time to generate 500 output tokens, based on output speed

Key Comparison Metrics & API Features

Groq logoGroq
131k
Open
--
923
0.83
3.54
2.17
Lightning AI logoLightning AI
128k
Open
--
--
--
--
--
Hyperbolic logoHyperbolic
131k
Open
--
--
--
--
--
CoreWeave logoCoreWeave
131k
Open
--
75
0.96
34.12
26.53
Cloudflare logoCloudflare
128k
Open
--
--
--
--
--
Amazon Bedrock logoAmazon Bedrock
131k
Open
--
167
11.17
26.15
11.98
Novita logoNovita
131k
Open
--
118
1.21
22.41
16.96
Google logoGoogle
131k
Open
--
189
8.68
21.90
10.58

Frequently Asked Questions

Common questions about gpt-oss-20b (low) providers

gpt-oss-20b (low) is available through 8 API providers: Groq, Lightning AI, Hyperbolic, CoreWeave, Cloudflare, Amazon, Novita, and Google Vertex. Each provider offers different performance characteristics and pricing.

gpt-oss-20b (low) is currently available through 8 API providers that we benchmark and track.

The fastest providers for gpt-oss-20b (low) by output speed are Groq (923.2 t/s), Google Vertex (189.1 t/s), and Amazon (167.0 t/s). Output speed measures how quickly tokens are generated after the model starts responding.

The providers with the lowest time to first answer token for gpt-oss-20b (low) are Groq (2.99s), Novita (18.17s), and Google Vertex (19.25s). Lower latency means faster initial response time.

The most affordable providers for gpt-oss-20b (low) by blended price are CoreWeave ($0.04 per 1M tokens), Novita ($0.05 per 1M tokens), and Lightning AI ($0.07 per 1M tokens). Blended price uses a 7:2:1 cache hit/input/output token ratio.

The providers with the lowest input token pricing for gpt-oss-20b (low) are CoreWeave ($0.03 per 1M input tokens), Novita ($0.04 per 1M input tokens), and Lightning AI ($0.05 per 1M input tokens).

The providers with the lowest output token pricing for gpt-oss-20b (low) are Hyperbolic ($0.10 per 1M output tokens), CoreWeave ($0.13 per 1M output tokens), and Novita ($0.15 per 1M output tokens).

Prices for gpt-oss-20b (low) vary up to 5.3x across providers. The most affordable is CoreWeave at $0.04 per 1M tokens, while Cloudflare charges $0.21 per 1M tokens.

Output speed for gpt-oss-20b (low) varies significantly across providers. Groq is the fastest at 923.2 t/s, which is 12.2x faster than CoreWeave at 75.4 t/s.

All 8 providers of gpt-oss-20b (low) support JSON mode for structured output.

6 of 8 providers support function calling for gpt-oss-20b (low): Groq, Lightning AI, CoreWeave, Cloudflare, Amazon, and Google Vertex.

For gpt-oss-20b (low), Groq offers the best performance with highest speed and lowest latency. For cost optimization, CoreWeave provides the most competitive pricing.

When choosing a provider for gpt-oss-20b (low), consider: output speed (for throughput-intensive tasks), latency (for interactive applications requiring quick first responses), pricing (for cost-sensitive workloads), and API features like JSON mode or function calling.

Yes, provider performance can vary over time due to infrastructure changes, load balancing, and updates. We continuously benchmark all providers and display historical performance trends in the "Over Time" charts.

For information about gpt-oss-20b (low)'s intelligence, capabilities, modalities, and how it compares to other models, see the model overview page. View model overview