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ModelsOpenAIGPT-5.5

GPT-5.5

openai/gpt-5.51M context Compare →
MedianThe median blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted.
$11.25
Most expensiveThe highest blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted.
$12.38
Offers
49
Providers
19

Cheapest right now

OpenAI

The provider's published policy: prompts are not used for training.

1M

$11.25 blended / 1M tokens

No change7D
in
$5.00
out
$30.00
Cached input
$0.50

prompt up to 272K tokens: up to 272K: $5.00 / $30.00; above that: $10.00 / $45.00 (Input / Output, per million tokens)

See pricing See pricing at OpenAI (opens in a new tab)via OpenAI

Public leaderboards

  • Text Arena, style controlThe series the source publishes by default for text since 16 May 2025: ranks corrected for the style of the answers (style control).High setting #17 of 419Best rank in the source's rank spread, 17th to 43rd, given the confidence intervals of all ranked models. 26th by score. 1,482 1,478 to 1,485Arena Score · 69,377 votes listed as “GPT-5.5 (High)”
  • Text Arena, style controlThe series the source publishes by default for text since 16 May 2025: ranks corrected for the style of the answers (style control). #23 of 419Best rank in the source's rank spread, 23rd to 48th, given the confidence intervals of all ranked models. 32nd by score. 1,477 1,473 to 1,480Arena Score · 70,949 votes

Source: Arena (opens in a new tab) · Data under the CC BY 4.0 license (creativecommons.org/licenses/by/4.0) · CC BY 4.0 (opens in a new tab) · scores and ranks as published on 28 Oct 2026; the presentation is ours

GPT-5.5 costs from $11.25 per million tokens (at a 3:1 input:output mix): the lowest current price, at 10 providers, checked on ; 49 offers are listed.

Listed offers, by price

Comparable offersOther offersSolid steps are comparable offers; dashed steps are the other offers, which are not counted in cheapest, median or most expensive.Official list price

Offers not counted in cheapest, median or most expensive (30)

  • $11.25 · OpenAI via Eden AI · cannot be designated the cheapest
  • $11.25 · OpenAI via Kilo Gateway · cannot be designated the cheapest
  • $11.25 · OpenAI via LLM API · cannot be designated the cheapest
  • $11.25 · OpenAI via Vercel AI Gateway · another route of the same provider
  • $11.25 · Azure via Eden AI · cannot be designated the cheapest
  • $11.25 · Azure via Kilo Gateway · cannot be designated the cheapest
  • $11.25 · Azure via LLM API · cannot be designated the cheapest
  • $11.25 · Abacus RouteLLM via Abacus RouteLLM · cannot be designated the cheapest
  • $11.25 · FastRouter via FastRouter · cannot be designated the cheapest
  • $11.25 · Glama via Glama · cannot be designated the cheapest
  • $11.25 · Martian via Martian · cannot be designated the cheapest
  • $11.25 · Nous Portal via Nous Portal · cannot be designated the cheapest
  • $11.25 · OrcaRouter via OrcaRouter · cannot be designated the cheapest
  • $11.25 · OpenAI via LLM Gateway · another route of the same provider
  • $11.25 · Azure via LLM Gateway · another route of the same provider
  • $11.25 · OpenAI via Requesty · another route of the same provider
  • $11.25 · OpenAI via OpenRouter · another route of the same provider
  • $11.25 · Azure via OpenRouter · another route of the same provider
  • $11.84 · ShengSuanYun via ShengSuanYun · cannot be designated the cheapest
  • $12.38 · Amazon Bedrock via Eden AI · cannot be designated the cheapest
  • $12.38 · Amazon Bedrock via Eden AI · cannot be designated the cheapest
  • $12.38 · Amazon Bedrock via Kilo Gateway · cannot be designated the cheapest
  • $12.38 · Azure via Eden AI · cannot be designated the cheapest
  • $12.38 · Azure via Eden AI · cannot be designated the cheapest
  • $12.38 · Azure via Kilo Gateway · cannot be designated the cheapest
  • $12.38 · Azure via Kilo Gateway · cannot be designated the cheapest
  • $12.38 · Amazon Bedrock via OpenRouter · another route of the same provider
  • $28.13 · OpenAI via Kilo Gateway · cannot be designated the cheapest
  • $28.13 · Vercel AI Gateway via Vercel AI Gateway · priority tier
  • $28.13 · OpenAI via OpenRouter · priority tier

Price historyThe cheapest offer each day, against the lab's official list price when it publishes one. Each day at 00:00 UTC, the offer the API would have selected as the cheapest, with the same exclusions as /cheapest. Blended price, promotions included.

Cheapest offer and official list price, by day, 30 days
DayCheapest offerOfficial list price
2026-10-02$11.25, Abacus RouteLLM$11.25
2026-10-03$11.25, Abacus RouteLLM$11.25
2026-10-04$11.25, Abacus RouteLLM$11.25
2026-10-05$11.25, Abacus RouteLLM$11.25
2026-10-06$11.25, OpenAI$11.25
2026-10-07$11.25, OpenAI$11.25
2026-10-08$11.25, OpenAI$11.25
2026-10-09$11.25, OpenAI$11.25
2026-10-10$11.25, OpenAI$11.25
2026-10-11$11.25, OpenAI$11.25
2026-10-12$11.25, OpenAI$11.25
2026-10-13$11.25, OpenAI$11.25
2026-10-14$11.25, OpenAI$11.25
2026-10-15$11.25, OpenAI$11.25
2026-10-16$11.25, OpenAI$11.25
2026-10-17$11.25, OpenAI$11.25
2026-10-18$11.25, OpenAI$11.25
2026-10-19$11.25, OpenAI$11.25
2026-10-20$11.25, OpenAI$11.25
2026-10-21$11.25, OpenAI$11.25
2026-10-22$11.25, OpenAI$11.25
2026-10-23$11.25, OpenAI$11.25
2026-10-24$11.25, OpenAI$11.25
2026-10-25$11.25, OpenAI$11.25
2026-10-26$11.25, OpenAI$11.25
2026-10-27$11.25, OpenAI$11.25
2026-10-28$11.25, OpenAI$11.25
2026-10-29$11.25, OpenAI$11.25
2026-10-30$11.25, OpenAI$11.25
2026-10-31$11.25, OpenAI$11.25

Cheapest offerOfficial list price

Offers

The 25 cheapest of 49 offers

Offers for GPT-5.5, one row per offer, sorted by blended price.
RankProvider · viaYou buy access through an aggregator: one account and one API that forward your requests to other providers. "Via" names the aggregator; the price is the one it charges you. When "via" says "hosted API", no aggregator is involved: the model belongs to a lab and another provider sells it.Input $/1MOutput $/1MBlended $/1MA single price that mixes input and output: 3 input tokens for 1 output token, per million tokens. It makes offers easy to rank; your real cost depends on your own mix. ContextThe maximum amount of text, counted in tokens, the model can take in and write in a single request. Past this limit, the request is refused or cut.ConditionsWhat a provider says about how it handles your data and who can sign up: training on prompts, processing region, sign-up requirements. Each comes from the provider's published documents; when nothing is published, it stays unknown.SignalsOffer
1 OpenAI 5.00 30.00 11.25 – prompt up to 272K tokens: up to 272K: $5.00 / $30.00; above that: $10.00 / $45.00 (Input / Output, per million tokens)
See pricing at OpenAI (opens in a new tab)
2 AtlasCloudhosted APISold by a provider other than the lab that made the model. 5.00 30.00 11.25 1.1M
See pricing at AtlasCloud (opens in a new tab)
3 NanoGPT 5.00 30.00 11.25 1.1M
Go to offer at NanoGPT (opens in a new tab)
4 OpenAIvia Eden AI 5.00 30.00 11.25 1.1M Unverified. No public page for this offer: listed, not designated cheapest
: Eden AI (opens in a new tab). No public price page for this model
5 OpenAIvia Kilo Gateway 5.00 30.00 11.25 1.1M Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
Go to offer at Kilo Gateway (opens in a new tab)
6 OpenAIvia LLM API 5.00 30.00 11.25 – Unconfirmed. Last checked 18 October 2026: the last published value, not a confirmed one Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
See pricing at LLM API (opens in a new tab)
7 OpenAIvia Vercel AI Gateway 5.00 30.00 11.25 1M
Go to offer at Vercel AI Gateway (opens in a new tab)
8 Azurevia Eden AI 5.00 30.00 11.25 922k Unverified. No public page for this offer: listed, not designated cheapest
: Eden AI (opens in a new tab). No public price page for this model
9 Azurevia Kilo Gateway 5.00 30.00 11.25 1.1M Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
Go to offer at Kilo Gateway (opens in a new tab)
10 Azurevia LLM API 5.00 30.00 11.25 – Unconfirmed. Last checked 18 October 2026: the last published value, not a confirmed one Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
See pricing at LLM API (opens in a new tab)
11 Azurevia Vercel AI Gateway 5.00 30.00 11.25 272k
Go to offer at Vercel AI Gateway (opens in a new tab)
12 InferenceNethosted APISold by a provider other than the lab that made the model. 5.00 30.00 11.25 1.1M
Go to offer at InferenceNet (opens in a new tab)
13 NEAR AIhosted APISold by a provider other than the lab that made the model. 5.00 30.00 11.25 1.1M
See pricing at NEAR AI (opens in a new tab)
14 Abacus RouteLLM 5.00 30.00 11.25 1M United States Unverified. No public page for this offer: listed, not designated cheapest
: Abacus RouteLLM (opens in a new tab). No public price page for this model
15 FastRouter 5.00 30.00 11.25 1.1M Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
Go to offer at FastRouter (opens in a new tab)
16 Glama 5.00 30.00 11.25 1.1M Unverified. No public page for this offer: listed, not designated cheapest
: Glama (opens in a new tab). No public price page for this model
17 HPC-AI 5.00 30.00 11.25 1.1M prompt up to 272K (271,999) tokens: up to 272K (271,999): $5.00 / $30.00; above that: $10.00 / $45.00 (Input / Output, per million tokens)
See pricing at HPC-AI (opens in a new tab)
18 Martian 5.00 30.00 11.25 – worldwide Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
See pricing at Martian (opens in a new tab)
19 Neosantara 5.00 30.00 11.25 270k Singapore, Indonesia, United States
See pricing at Neosantara (opens in a new tab)
20 Nous Portal 5.00 30.00 11.25 1.1M Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
See pricing at Nous Portal (opens in a new tab)
21 OrcaRouter 5.00 30.00 11.25 – Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
Go to offer at OrcaRouter (opens in a new tab)
22 RedPill 5.00 30.00 11.25 1.1M
Go to offer at RedPill (opens in a new tab)
23 ZenMux 5.00 30.00 11.25 1.1M prompt up to 272K (271,999) tokens: up to 272K (271,999): $5.00 / $30.00; above that: $10.00 / $45.00 (Input / Output, per million tokens)
Go to offer at ZenMux (opens in a new tab)
24 OpenAIvia LLM Gateway 5.00 30.00 11.25 – Fee 5%: LLM Gateway adds a 5% fee on credit usage, plus 1.5% for cards issued outside the US (read on llmgateway.io/pricing on Oct 30). Offers are ranked with the 5% included.
Go to offer at LLM Gateway (opens in a new tab)
25 Azurevia LLM Gateway 5.00 30.00 11.25 – Fee 5%: LLM Gateway adds a 5% fee on credit usage, plus 1.5% for cards issued outside the US (read on llmgateway.io/pricing on Oct 30). Offers are ranked with the 5% included.
Go to offer at LLM Gateway (opens in a new tab)

No training on promptsPrompts may be used for trainingTraining terms not published

backend not named. The router bills this price itself without naming who serves the model.

Show all 49 offers

4 flex or batch offers hidden (lower priority, variable latency).

Blended = (3 × input + output) / 4, per million tokens. Prices in USD, converted at the ECB rate when the provider bills in another currency.

Method

Monthly cost for your workload

Computed by the API for the three cheapest offers, per 30-day month.
  1. OpenAI$750.00per month
  2. AtlasCloud$750.00per month+$0.00 vs the cheapest
  3. NanoGPT$750.00per month+$0.00 vs the cheapest

Compare GPT-5.5 with

Related models

More from OpenAI

All OpenAI models

Same index family

Use this data

The index is queryable. The API is free to use.
Free API
curl https://api.inferindex.dev/cheapest?model=openai/gpt-5.5
MCP server
claude mcp add --transport http inferindex https://mcp.inferindex.dev/mcp

Also works in Cursor and Codex: see the MCP page.