# Gemini API — pricing

**Status:** DOCUMENTED (every price on the pricing page transcribed; nothing here is account-specific). Machine-readable twin: `generated/fragments/pricing/gemini-pricing.json` (527 price records, `tier` ∈ standard | batch | flex | priority | free).
**Sources:** https://ai.google.dev/gemini-api/docs/pricing · https://ai.google.dev/gemini-api/docs/billing · https://ai.google.dev/gemini-api/docs/priority-inference · https://ai.google.dev/gemini-api/docs/flex-inference · https://ai.google.dev/gemini-api/docs/google-search#pricing · https://ai.google.dev/gemini-api/docs/file-search · https://ai.google.dev/gemini-api/docs/latest-model#pricing
**Last verified:** 2026-09-18 (docs). Prices in USD per 1M tokens unless stated. "Output" always **includes thinking tokens**.

## 1. Plans and tiers

| Plan | Who | Key facts |
|---|---|---|
| Free | developers, small projects | free input/output on many models; limited model access (no Pro/image/video/music/agents); **content used to improve Google products** (Unpaid Services); Batch/Flex "Not available" |
| Paid (Tier 1–3) | production | higher limits; context caching; Batch API (−50 %); Flex (−50 %); Priority (+75–100 %); content **not** used for training; prepay or postpay billing (since 2026-03-23); spend caps $250 / $2,000 / $20,000+ per tier |
| Enterprise | Gemini Enterprise Agent Platform (Vertex AI) | provisioned throughput, volume discounts, compliance; different price list |

Service tiers (`service_tier` request field, Interactions API & OpenAI-compat; `serviceTier` echoed in `usageMetadata` and in the `X-Gemini-Service-Tier` header):

| Tier | Price vs Standard | Latency | Reliability |
|---|---|---|---|
| standard | 1× | seconds–minutes | high |
| flex | 0.5× | 1–15 min target | best-effort, sheddable (429 when shed) |
| priority | 1.8× (docs: "75-100 % more") | seconds | non-sheddable; overflow gracefully downgraded to standard |
| batch (async API) | 0.5× | ≤ 24 h | high throughput |

## 2. Text / multimodal models (per 1M tokens)

Introductory pricing marked ★ applies through **2026-12-31**; the 2027 price is in parentheses.

| Model | Input | Output | Cached input | Cache storage /h | Batch & Flex (in / out) | Priority (in / out) | Free tier |
|---|---|---|---|---|---|---|---|
| gemini-3.8-flash ★ | 0.75 (1.50) | 3.75 (7.50) | 0.075 (0.15) | 0.50 (1.00) | 0.375 / 1.875 (0.75 / 3.75) | 1.35 / 6.75 (2.70 / 13.50) | free |
| gemini-3.7-flash ★ | 0.75 (1.50) | 3.75 (7.50) | 0.075 (0.15) | 0.50 (1.00) | 0.375 / 1.875 | 1.35 / 6.75 | free |
| gemini-3.6-flash ★ | 0.75 (1.50) | 3.75 (7.50) | 0.075 (0.15) | 0.50 (1.00) | 0.375 / 1.875 | 1.35 / 6.75 | free |
| gemini-3.5-flash | 1.50 | 9.00 | 0.15 | 1.00 | 0.75 / 4.50 (flex cache 0.08) | 2.70 / 16.20 | free |
| gemini-3.5-flash-lite | 0.30 (all modalities) | 2.50 | 0.03 | 1.00 | 0.15 / 1.25 | 0.54 / 4.50 | free (caching n/a) |
| gemini-3.1-flash-lite | 0.25 text-image-video / 0.50 audio | 1.50 | 0.025 / 0.05 audio | 1.00 (batch 0.50, prio 1.80) | 0.125 (0.25 audio) / 0.75 | 0.45 (0.90 audio) / 2.70 | free |
| gemini-3-flash-preview | 0.50 / 1.00 audio | 3.00 | 0.05 / 0.10 audio | 1.00 (prio 1.80) | 0.25 (0.50 audio) / 1.50 | 0.90 (1.80 audio) / 5.40 | free |
| gemini-3.1-pro-preview (+ `-customtools`) | 2.00 ≤200k / 4.00 >200k | 12.00 / 18.00 | 0.20 / 0.40 | 4.50 (prio 8.10) | 1.00–2.00 / 6.00–9.00 | 3.60–7.20 / 21.60–32.40 | not available |
| gemini-2.5-pro | 1.25 / 2.50 >200k | 10.00 / 15.00 | 0.125 / 0.25 | 4.50 (prio 8.10) | 0.625–1.25 / 5.00–7.50 | 2.25–4.50 / 18–27 | free (no caching) |
| gemini-2.5-flash | 0.30 / 1.00 audio | 2.50 | 0.03 / 0.10 audio | 1.00 (prio 1.80) | 0.15 (0.50 audio) / 1.25 | 0.54 (1.80 audio) / 4.50 | free |
| gemini-2.5-flash-lite | 0.10 / 0.30 audio | 0.40 | 0.01 / 0.03 audio | 1.00 (prio 1.80) | 0.05 (0.15 audio) / 0.20 | 0.18 (0.54 audio) / 0.72 | free |
| gemini-robotics-er-2-preview ★ | 1.00 (2.00) | 5.00 (10.00) | 0.10 (0.20) | 0.50 (1.00) | 0.50 / 2.50 | — | free |
| gemini-2.5-computer-use-preview-10-2025 ★ | 1.00 (2.00) | 5.00 (10.00) | — | — | — | — | free |
| gemma-4-26b-a4b-it, gemma-4-31b-it | free | free | free | free | n/a | n/a | free only (paid tier "Not available") |

Notes: long-context tier threshold is **200k prompt tokens** (Pro models only). Batch/Flex context-cache reads keep standard price on Pro ("Same as Standard"). `DOCUMENT` (PDF) tokens are billed at the image token rate. The 2.5 family is "no longer available to new users" (live 404) despite still being priced.

## 3. Live API, speech, transcription (per 1M tokens; audio = 25 tokens/s)

| Model | Input | Output | Free tier |
|---|---|---|---|
| gemini-3.8-live, gemini-3.8-live-extended-thinking, gemini-3.1-flash-live-preview | text 0.75 · audio 3.00 (≈$0.005/min) · image/video 1.00 (≈$0.002/min) | text 4.50 · audio 12.00 (≈$0.018/min) | free; Google Search grounding supported |
| gemini-2.5-flash-native-audio-preview-12-2025 | text 0.50 · audio/video 3.00 | text 2.00 · audio 12.00 | free |
| gemini-3.5-live-translate-preview | audio 3.50 (≈$0.0053/min) | audio 21.00 (≈$0.0315/min); ≈$0.0368/min blended | free |
| gemini-3.5-transcribe-live | audio 3.50 (≈$0.005/min) | text 21.00 (≈$0.004/min; 175 text tokens/min); ≈$0.009/min blended | free |
| gemini-3.5-transcribe | audio 2.00 (≈$0.003/min) | text 12.00 (≈$0.002/min); ≈$0.005/min blended | free |
| gemini-3.1-flash-tts-preview | text 1.00 (batch 0.50) | audio 20.00 (batch 10.00) | free (standard) |
| gemini-2.5-flash-preview-tts | text 0.50 (batch 0.25) | audio 10.00 (batch 5.00) | free (standard) |
| gemini-2.5-pro-preview-tts | text 1.00 (batch 0.50) | audio 20.00 (batch 10.00) | not available |

## 4. Image generation

| Model | Input | Text output | Image output | Per-image equivalents | Batch |
|---|---|---|---|---|---|
| gemini-3.1-flash-image (Nano Banana 2; preview id same) | 0.50 | 3.00 | 60.00 /1M image tokens | 0.5K 747 tok $0.045 · 1K 1120 tok $0.067 · 2K 1680 tok $0.101 · 4K 2520 tok $0.151 | 0.25 / 1.50 / 30.00 → $0.022–0.076 |
| gemini-3.1-flash-lite-image (Nano Banana 2 Lite) | 0.25 | 1.50 | 30.00 | 1K only: $0.0336 | 0.125 / 0.75 / 15.00 → $0.0168 |
| gemini-3-pro-image (Nano Banana Pro; `-preview`, `nano-banana-pro-preview`) | 2.00 (image in = 560 tok = $0.0011) | 12.00 | 120.00 | 1K/2K 1120 tok $0.134 · 4K 2000 tok $0.24 | batch & flex: 1.00 text, $0.0006/image in, 6.00 text out, $0.067 / $0.12 per image; priority 3.60 / 21.60 / 216.00 |
| gemini-2.5-flash-image (Nano Banana, shutdown 2026-10-02) | 0.30 | — | 30.00 (1290 tok/image) | $0.039 per image | batch/flex 0.15 + $0.0195; priority 0.54 + $0.0702 |
| imagen-4.0-* | retired 2026-08-17 | | | | |

Google Search grounding on image models: 5,000 free requests/month shared across Gemini 3.x, then $14 per 1,000 (web + image search); retrieved context not charged as input.

## 5. Video, music, embeddings

| Model | Price | Unit / notes |
|---|---|---|
| gemini-omni-1.1-flash / gemini-omni-flash-preview | input 1.50; output text 9.00, **video 17.50** per 1M tokens | 5,792 tokens per second of 720p ⇒ ≈ **$0.10 per second**; paid tier only |
| veo-3.1-generate-preview | **$0.40/s** (720p & 1080p), **$0.60/s** (4K) | video with audio; charged only when generation succeeds |
| veo-3.1-fast-generate-preview | $0.10/s (720p), $0.12/s (1080p), $0.30/s (4K) | |
| veo-3.1-lite-generate-preview | $0.05/s (720p), $0.08/s (1080p); no 4K | |
| lyria-3.5 | **$0.08 per song** | full length |
| lyria-3-clip-preview / lyria-3-pro-preview | $0.04 (30 s clip) / $0.08 per song | legacy |
| lyria-realtime-exp | not priced (experimental) | |
| gemini-embedding-2 (and `-preview`) | text 0.20 · image 0.45 ($0.00012/image) · audio 6.50 ($0.00016/s) · video 12.00 ($0.00079/frame) | batch: 0.10 / 0.225 / 3.25 / 6.00; free tier free (standard) |
| gemini-embedding-001 | not on the pricing page (2026-09-18); File Search indexing uses $0.15/1M | shutdown 2028-05-14 |

## 6. Tools, agents, services

| Item | Free tier | Paid tier |
|---|---|---|
| Grounding with Google Search | 500 RPD free (Flash/Flash-Lite 2.5; not Pro) | Gemini 3.x: **5,000 free search requests/month** shared, then **$14 / 1,000 requests** (billed per executed query). Gemini 2.5: 1,500 RPD free, then **$35 / 1,000 grounded prompts** |
| Grounding with Google Maps | 500 RPD (not Pro) | Gemini 3: 5,000 prompts/month free then $14 / 1,000 queries; 2.5: 1,500 RPD (10,000 for Pro) then $25 / 1,000 |
| Code execution | free | token rates only (generated code + results = output tokens, re-read = input tokens); no runtime charge |
| URL context | free | retrieved content billed as input tokens |
| Computer use | n/a | token rates of the model |
| File Search | free | indexing embeddings **$0.15 / 1M tokens**; storage and query-time embeddings free; retrieved doc tokens billed as input |
| Custom Tools endpoint | n/a | same as gemini-3.1-pro-preview |
| Deep Research agent | n/a (paid key required) | list-rate tokens incl. intermediate reasoning; tool fees per tool |
| Managed agents / Antigravity | n/a | list-rate tokens; sandbox compute **not billed during preview** |
| Context-cache storage | free on Flash free tier | $0.50–$8.10 per 1M tokens per hour (model/tier dependent, table §2) |
| Google AI Studio | free in all regions | separate from API billing; Google AI Pro/Ultra plans apply to the AI Studio UI only |

## 7. Gotchas
- Thinking tokens are billed as output (`usageMetadata.thoughtsTokenCount`); with tiny `maxOutputTokens` the whole budget can go to thoughts (observed `MAX_TOKENS` with empty text on 3.5/3.8 Flash and Gemma 4).
- Batch/Flex are "Not available" on the free tier for most models but listed "Free of charge" for gemini-3.5-flash-lite (page inconsistency).
- Priority pricing tables show exactly 1.8× standard, while the prose says 75–100 % more.
- Failed requests are not billed; Veo is charged only for successfully generated videos.
- Prepay accounts stop serving at $0 balance; Google Cloud credits are applied first.