gpt-oss-20b

Priced by OpenAI.

Jurisdiction US
Context window 131,072 tokens
Provider OpenAI
Tiers priced 3

Published tiers

What the most recent complete run published for this model, one row per priced tier, each with the source it was read from.

Tier	Input USD/1M	Output USD/1M	Last read	Read from	Flags
batch	0.024	0.112	just now	OpenRouter models API	confirmedsingle source
cache_hit	0.009	n/a, not applicable: this tier prices input tokens only and has no output side	just now	OpenRouter models API	confirmedsingle source
flat	0.018	0.09	just now	OpenRouter models API	confirmedsingle source

This model on the price scale0.009 to 0.112 across 5 published values

The same six decades as the front page, so a price is in the same place here as it is anywhere else on this site. The two marks in the accent colour are this model’s cheapest and dearest published values.

Price history

Every distinct value this price has taken, oldest first — what the price did, not how often we happened to look. Rows marked backfill came from a public git history of a third-party pricing file and were never verified by us; they extend the series backwards and are flagged rather than hidden.

batch

2 distinct values

Held steady24 days — the value published now has been observed to hold for 24 days, which is 100% of the longest run on this page.

inputoutput1 window nobody looked inhorizontal axis is time

Input low 0.024 · high 0.05
Output low 0.112 · high 0.2
Observed 2026-08-29 12:00Zto 2026-09-23 12:00Z

First seen	Last seen	Input USD/1M	Output USD/1M	Reads	Source	Last read
2026-08-29 12:00Z	2026-09-15 12:00Z	0.05	0.2	13	OpenRouter models API	2026-09-15 12:00Z
2026-09-23 12:00Z	2026-10-17 12:00Z	0.024	0.112	23	OpenRouter models API	2026-10-17 12:00Z

cache_hit

2 distinct values

Held steady18 days — the value published now has been observed to hold for 18 days, which is 75% of the longest run on this page.

inputoutput1 window nobody looked inhorizontal axis is time

Input low 0.009 · high 0.03
Observed 2026-08-15 23:13Zto 2026-09-29 12:00Z

First seen	Last seen	Input USD/1M	Output USD/1M	Reads	Source	Last read
2026-08-15 23:13Z	2026-09-22 12:00Z	0.03	n/a, not applicable: this tier prices input tokens only and has no output side	50	OpenRouter models API	2026-09-22 12:00Z
2026-09-29 12:00Z	2026-10-17 12:00Z	0.009	n/a, not applicable: this tier prices input tokens only and has no output side	17	OpenRouter models API	2026-10-17 12:00Z

flat

2 distinct values

Held steady24 days — the value published now has been observed to hold for 24 days, which is 100% of the longest run on this page.

inputoutput1 window nobody looked inhorizontal axis is time

Input low 0.018 · high 0.03
Output low 0.09 · high 0.13
Observed 2026-08-15 23:13Zto 2026-09-23 12:00Z

First seen	Last seen	Input USD/1M	Output USD/1M	Reads	Source	Last read
2026-08-15 23:13Z	2026-09-22 12:00Z	0.03	0.13	50	OpenRouter models API	2026-09-22 12:00Z
2026-09-23 12:00Z	2026-10-17 12:00Z	0.018	0.09	23	OpenRouter models API	2026-10-17 12:00Z

Provenance

Read by openrouter_json from OpenRouter models API. Each row above links to the exact page its number came from. The vendor's page is authoritative: if it and this page disagree, the vendor is right and we are wrong.