OpenAI · LLM API pricing

gpt-oss-20b API pricing: cheapest provider

10 providers sell gpt-oss-20b. W&B Inference (CoreWeave) is cheapest; the most expensive charges 4.1× as much for the same model.

  • Cheapest$0.055per 1M · W&B Inference (CoreWeave)
  • Input · output$0.03 / $0.13per 1M tokens
  • Price gap4.1×across 10 providers
  • Accuracy60.8%GPQA · medium reasoning
  • Context131Kmax tokens
$0.055 W&B Inference (CoreWeave)4.1× spread$0.225 Cloudflare Workers AI
Already paying for gpt-oss-20b? Check if you overpay →

Standard list prices in USD from each provider's pricing page · last price change Oct 17, 2026 · How we collect and rank prices

Ranked for your volume

gpt-oss-20b monthly cost by provider

Change the monthly tokens and the ranking updates instantly, using each provider's standard list price.

More requirements: caching, context, features, provider

Share this page URL to keep your scenario. 10 of 10 providers meet these assumptions.

ProviderEstimated / monthInput / 1MOutput / 1MCached input / 1MContext
1
W&B Inference (CoreWeave)Inference provider - lowest for your volumePricing page
$0.56$0.03$0.13Not listed131,000
2
DeepInfraInference providerPricing page
$0.58$0.03$0.14Not listed131,072
3
Novita AIInference providerPricing page
$0.70$0.04$0.15Not listed131,072
4
SiliconFlowInference providerPricing page
$0.76$0.04$0.18Not listed131,000
5
OVHcloud AI EndpointsCloud platformBilled in EUR: €0.04 input, €0.15 output per 1M tokens. USD at the ECB rate of Oct 30, 2026 (1.1172).Pricing page
$0.78$0.0447$0.1676Not listed131,000
$1.30$0.07$0.30Not listed131,072
7
Fireworks AIInference providerPricing page
$1.30$0.07$0.30$0.035131,072
$1.30$0.07$0.30Not listed128,000
9
ReplicateInference providerPricing page
$1.62$0.09$0.36Not listedNot listed
$2.60$0.20$0.30Not listed128,000

Order depends on listed price for your volume only. No provider pays for its position.

Input volume includes the cached share, not an additional token volume. This is a list-price estimate, not a quote: cache-write charges, cache eligibility/TTL, batch discounts, long-context surcharges, regional pricing and taxes are excluded. Check the provider's terms for your workload before switching.

Accuracy: GPQA Diamond (graduate-level science questions) measured by Epoch AI (CC BY 4.0) on gpt-oss-20b_medium, run Aug 27, 2026. The model is the same at every provider, though quantized deployments can score lower.

Price history

The cheapest price has not changed since tracking started on Sep 28, 2026: $0.055 per 1M tokens at W&B Inference (CoreWeave). All price changes

Switch to the cheapest provider

Switch to W&B Inference (CoreWeave)

Already using the OpenAI SDK? Change the base URL, key and model name:

from openai import OpenAI
import os

client = OpenAI(
    base_url="https://api.inference.wandb.ai/v1",
    api_key=os.environ["WANDB_API_KEY"],
)
response = client.chat.completions.create(
    model="openai/gpt-oss-20b",
    messages=[{"role": "user", "content": "Hello"}],
)
Base URL from W&B Inference (CoreWeave)'s API docs, model name from the open pricing datasets. Check the model page in W&B Inference (CoreWeave)'s docs before you switch production traffic.

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Before you pick a provider

Context windows differ by provider, from 128K to 131K tokens. A cheaper host may not accept your longest prompts.

1 of 10 providers list a cached-input price. Repeated system prompts or documents can cost much less there than the standard input rate shown above.