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API PRICES

OpenAI · gpt-3.5-turbo

Provider prices, cheapest first

Price comparison

Official (cash): Input 0.5 / output 1.5 USD/million tokensOpenAI · 10-24
Lowest inference provider (cash): Input 0.5 / output 1.5 USD/million tokensOpenRouter · Aggregator · 10-24
Lowest relay (credit): 1.25 USD credit/million total tokenszzshu.cc "Azure-GPT" · 10-23

Official and inference-provider prices are cash; relay prices are site credit (USD credit or CNY credit), a different unit, compared separately. Relay prices are per million total tokens at 75% input and 25% output.

All official and inference price observations

OpenAI · gpt-3.5-turbo official price: input 0.5, output 1.5 USD per million tokens (OpenAI, observed 2026-10-24). Cheapest inference provider: OpenRouter, input 0.5, output 1.5 USD per million tokens. Cheapest relay: zzshu.cc, group "Azure-GPT" 1.25 USD_CREDIT per million total tokens (credit price, not cash, observed 2026-10-23). 80 sites have comparable prices; 140 sites list this model.Relay blended price uses 75% input and 25% output. Conditions: Standard processing · documentSection: Flagship models · processingMode: standard

Price ranges per million tokens

Official cash prices · Lowest 0.75 · median 0.75 · highest 0.75 · 1 quotes USD / per million tokens

Inference provider cash prices · Lowest 0.75 · median 0.75 · highest 0.75 · 1 quotes USD / per million tokens

Relay USD credit prices · Lowest 1.25 · median 1.4375 · highest 1.625 · 2 quotes USD / per million tokens, site credit

Official price

Provider	Tariff	Input	Output	Cache read	Cache write	Unit	Observed	Conditions and source
OpenAI	Standard	0.5	1.5	—	—	USD / 1M tokens	2026-10-24	Standard processing · documentSection: Flagship models · processingMode: standard Full price conditions { "sourceUnit": null, "sourceAmounts": null, "conditions": [], "contextTier": null, "processingMode": "standard", "conditionNotes": [ "documentSection: Flagship models", "processingMode: standard" ], "effectiveFrom": null, "effectiveUntil": null } Official source

Official prices are the vendor's cash prices. Inference providers also list cash prices and can be compared directly. Relays list prices in site credit; what you actually pay depends on each site's top-up rate, so they cannot be compared with official prices directly.

Inference providers

Provider	Tariff	Input	Output	Cache read	Cache write	Unit	Observed	Conditions and source	vs official
OpenRouter · Aggregator	Standard	0.5	1.5	—	—	USD / 1M tokens	2026-10-24	Full price conditions { "sourceUnit": "USD_PER_TOKEN", "sourceAmounts": { "input": "0.0000005", "output": "0.0000015" }, "conditions": [], "contextTier": null, "processingMode": null, "conditionNotes": [], "effectiveFrom": null, "effectiveUntil": null } Official source

Provider

Tariff

Input

Output

Cache read

Cache write

Unit

Observed

Conditions and source

vs official

OpenRouter · Aggregator

Standard

0.5

1.5

—

USD / 1M tokens

2026-10-24

Full price conditions

{
  "sourceUnit": "USD_PER_TOKEN",
  "sourceAmounts": {
    "input": "0.0000005",
    "output": "0.0000015"
  },
  "conditions": [],
  "contextTier": null,
  "processingMode": null,
  "conditionNotes": [],
  "effectiveFrom": null,
  "effectiveUntil": null
}

Official source

Other tariffs and prices to review

Inference providers

Provider	Tariff	Input	Output	Cache read	Cache write	Unit	Observed	Conditions and source
OpenRouter · Aggregator	Batch	0.25	0.75	—	—	USD / 1M tokens	2026-10-24	OpenRouter batch variant · Additional web_search price 0.01 USD (per unit as declared by OpenRouter) Full price conditions { "sourceUnit": "USD_PER_TOKEN", "sourceAmounts": { "input": "0.00000025", "output": "0.00000075" }, "conditions": [ "OpenRouter batch variant" ], "contextTier": null, "processingMode": null, "conditionNotes": [ "Additional web_search price 0.01 USD (per unit as declared by OpenRouter)" ], "effectiveFrom": null, "effectiveUntil": null } Official source

Provider

Tariff

Input

Output

Cache read

Cache write

Unit

Observed

Conditions and source

OpenRouter · Aggregator

Batch

0.25

0.75

—

USD / 1M tokens

2026-10-24

OpenRouter batch variant · Additional web_search price 0.01 USD (per unit as declared by OpenRouter)

Full price conditions

{
  "sourceUnit": "USD_PER_TOKEN",
  "sourceAmounts": {
    "input": "0.00000025",
    "output": "0.00000075"
  },
  "conditions": [
    "OpenRouter batch variant"
  ],
  "contextTier": null,
  "processingMode": null,
  "conditionNotes": [
    "Additional web_search price 0.01 USD (per unit as declared by OpenRouter)"
  ],
  "effectiveFrom": null,
  "effectiveUntil": null
}

Official source

Older official and inference provider prices

Earlier price observations and their original conditions

Official price

Provider	Tariff	Input	Output	Cache read	Cache write	Unit	Observed	Conditions and source
OpenAI	Standard	0.5	1.5	—	—	USD / 1M tokens	2026-10-17	Standard processing · documentSection: Flagship models · processingMode: standard Full price conditions { "sourceUnit": null, "sourceAmounts": null, "conditions": [], "contextTier": null, "processingMode": "standard", "conditionNotes": [ "documentSection: Flagship models", "processingMode: standard" ], "effectiveFrom": null, "effectiveUntil": null } Official source

Inference providers

Provider	Tariff	Input	Output	Cache read	Cache write	Unit	Observed	Conditions and source
OpenRouter · Aggregator	Batch	0.25	0.75	—	—	USD / 1M tokens	2026-10-17	OpenRouter batch variant · Additional web_search price 0.01 USD (per unit as declared by OpenRouter) Full price conditions { "sourceUnit": "USD_PER_TOKEN", "sourceAmounts": { "input": "0.00000025", "output": "0.00000075" }, "conditions": [ "OpenRouter batch variant" ], "contextTier": null, "processingMode": null, "conditionNotes": [ "Additional web_search price 0.01 USD (per unit as declared by OpenRouter)" ], "effectiveFrom": null, "effectiveUntil": null } Official source
OpenRouter · Aggregator	Standard	0.5	1.5	—	—	USD / 1M tokens	2026-10-17	Full price conditions { "sourceUnit": "USD_PER_TOKEN", "sourceAmounts": { "input": "0.0000005", "output": "0.0000015" }, "conditions": [], "contextTier": null, "processingMode": null, "conditionNotes": [], "effectiveFrom": null, "effectiveUntil": null } Official source

Provider

Tariff

Input

Output

Cache read

Cache write

Unit

Observed

Conditions and source

OpenRouter · Aggregator

Batch

0.25

0.75

—

USD / 1M tokens

2026-10-17

OpenRouter batch variant · Additional web_search price 0.01 USD (per unit as declared by OpenRouter)

Full price conditions

{
  "sourceUnit": "USD_PER_TOKEN",
  "sourceAmounts": {
    "input": "0.00000025",
    "output": "0.00000075"
  },
  "conditions": [
    "OpenRouter batch variant"
  ],
  "contextTier": null,
  "processingMode": null,
  "conditionNotes": [
    "Additional web_search price 0.01 USD (per unit as declared by OpenRouter)"
  ],
  "effectiveFrom": null,
  "effectiveUntil": null
}

Official source

OpenRouter · Aggregator

Standard

0.5

1.5

—

USD / 1M tokens

2026-10-17

Full price conditions

{
  "sourceUnit": "USD_PER_TOKEN",
  "sourceAmounts": {
    "input": "0.0000005",
    "output": "0.0000015"
  },
  "conditions": [],
  "contextTier": null,
  "processingMode": null,
  "conditionNotes": [],
  "effectiveFrom": null,
  "effectiveUntil": null
}

Official source

Unit: USD credits per 1M tokens. These are site-credit prices; actual cost depends on each site’s top-up rate.

Blended price = input × 75% + output × 25%, without cache.

Price range: lowest 1.25 · median 1.4375 · highest 1.625 (2 quotes, USD credits per million total tokens)

sites have comparable prices80140 sites list this model; approximately 1 operators

Lowest input price1USD credits / 1M

Median of each provider’s lowest price1USD credits / 1M

Relays

Prices below are in site credit, not cash.

#	Provider	Plan / conditions	Input ↑USD credits / 1M	Output USD credits / 1M	Cache readUSD credits / 1M	BlendedUSD credits / 1M	Details
Recent price
01	zzshu.ccAsk or discussCollected: 23 Oct 2026, 23:52 UTC Collected this cycle View 2 plans	Azure-GPT Azure-GPT no distillation [machine translation]Original: Azure-GPT不可蒸馏 Operator pending verification	1	2	—	1.25Median price ÷ this price: 1.2×	Full prices and sources
02	zzshu.ccAsk or discussCollected: 23 Oct 2026, 23:52 UTC Collected this cycle View 2 plans	Azure-GPT distillation allowed [machine translation]Group on site: Azure-GPT可蒸馏 Azure-GPT distillation allowed [machine translation]Original: Azure-GPT可蒸馏 Operator pending verification	1.3	2.6	—	1.625Median price ÷ this price: 0.9×	Full prices and sources

Special groups · 3 rows · not ranked

These plans are marked as test, internal, disabled, gated by top-up or membership, or have a near-zero ratio. They may not be purchasable or stable, so they are listed separately and left out of the ranking and statistics.

near-zero-ratio group: 2 rows
unrecognized flag USAGE_IMAGE_ONLY: 1 rows

ai.lt4net.org · default · gpt-3.5-turbo · Input 0.0005 / Output 0.001 USD credits / 1M
zen-ai.top · free · gpt-3.5-turbo · Input 0.0005 / Output 0.0015 USD credits / 1M
api.manai8.xyz · Image generation only [machine translation]Group on site: 生图专用 · gpt-3.5-turbo · Input 0.5 / Output 1 USD credits / 1M

View all 3 rows →

How this ranking works

All per-token prices: 93,968 prices from 854 sites (about 751 companies). 84,786 are ranked, from 838 sites (about 736 companies); 9,182 more are listed separately and not ranked. Prices collected up to 2026-10-24.

This model has 464 recorded prices; 240 can be compared directly (236 ranked, 4 listed separately). Not comparable yet: price not parsed yet 123, scope of the official doc price not confirmed 32, billed per request or another unit 20, new price under review; showing the previous one 16, ratio looks unset 12, tiered by rules (see Tiered prices) 12, display unit not confirmed 4

2 recent · 0 stale (older than 10 days, or not updated by this refresh) · 0 unverified timestamps. Minimum and median only count recent paid prices; older prices stay in the table. 0 zero-valued pairs are separately unverified, without proof of free eligibility. Timing does not verify payment, upstream identity or quality.

Prices are converted to site credits using each site’s published ratio. What you actually pay depends on its top-up rate. Input, output and cache prices in each row come from the same plan. Several sites run by the same company take one place in the ranking: its cheapest plan, with the other sites listed under it. We judge “same company” by identical prices, status pages or homepage code; this is not a legal finding. To see every site’s prices, choose “All plans” or filter by provider.

“Self-declared unofficial channel” means the plan name itself says “reverse-engineered” or similar. We have not verified their source or quality. Minimum and median only count regular plans.

Full methodology →

Sources not accepted this cycle and reasons

FAQ

Which API is cheapest for OpenAI · gpt-3.5-turbo?

zzshu.cc, group "Azure-GPT", 1.25 USD credit per million total tokens, observed 2026-10-23. 80 sites have comparable prices.

What is the official price for OpenAI · gpt-3.5-turbo?

Input 0.5, output 1.5 USD per million tokens, checked 2026-10-24. Lowest inference provider: OpenRouter, input 0.5, output 1.5 USD per million tokens.

How do I use OpenAI · gpt-3.5-turbo in Claude Code or Codex?

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