Skip to main content
Reviewed October 17, 2026 against Google’s model catalog, pricing, release notes, and deprecations. Unless explicitly labeled otherwise, prices below are USD per 1 million tokens, paid Standard tier, using published post-promotion rates. Output rates include thinking tokens for reasoning models. Batch, Flex, Priority, free-tier allowances, cache storage, grounding, and media generation are separate charges or pricing plans.

​
Gemini 4 Argon

google/gemini-4-argon Generally available since October 13, 2026, through the paid Gemini API and AI Studio. Google lists gemini-4-argon as stable; it is no longer limited to the earlier trusted-tester release. See the launch announcement.
  • Standard input / output / cached input: $2 / $10 / $0.10 through November 30, 2026; $4 / $20 / $0.20 from December 1. The catalog and generated cost SQL use the latter, post-promotion rates.
  • Batch and Flex: $1 / $5 / $0.05, then $2 / $10 / $0.10 on December 1.
  • Priority: $3.60 / $18 / $0.18, then $7.20 / $36 / $0.36 on December 1.
  • Invite-only Contributor tier: same token rates as Batch/Flex, with data used to improve Google’s products.
  • No free API tier. Output prices include thinking. Implicit caching only; no explicit cache creation or storage charge.
  • Search and Maps grounding each have a shared 5,000-query monthly allowance, then $14 per 1,000 queries. These native tool charges are separate from Timbal’s text-token estimates.
Full pricing The model specifications give a 1,048,576-token unified input/output window, with a default synchronous output limit of 65,536. Text, image, audio, video, and PDF input are supported; output is text. Tools, structured output, and reasoning are supported. Thinking levels are low, medium (default), and high. Set GEMINI_API_KEY for direct access, or use an authorized Timbal platform configuration:
Timbal uses Google’s OpenAI-compatible streaming chat API. The model’s default reasoning level also applies when model_params is omitted. Google ignores sampling parameters such as temperature and top_p on Argon. Explicit caching is unsupported. Native long decode can use the remaining unified window, but requires background execution or continuation handling; Timbal’s Agent chat route does not implement that continuation protocol. See the migration guide.

​
Gemini 3.8, 3.7, and 3.6 Flash

All three use published post-promotion Standard input / output / cached-input rates of $1.50 / $7.50 / $0.15, effective January 1, 2027. This timing is published on the pricing page. The catalog already uses these post-promotion rates; temporary introductory discounts are excluded. Post-promotion cache storage is an additional $1 per million token-hours. Batch and Flex token rates are half Standard; Priority token rates are 1.8 times Standard. These are not the default catalog prices.

gemini-3.8-flash

google/gemini-3.8-flashCurrent stable Flash generation for coding and multi-step agent work.
  • Input / output: $1.50 / $7.50 (post-promotion)
  • Cached input: $0.15
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Text, image, video, audio, and PDF input; text output
  • Tools and thinking; low, medium (default), or high; minimal is rejected
Model specifications

gemini-3.7-flash

google/gemini-3.7-flashPrevious stable Flash generation, still supported.
  • Input / output: $1.50 / $7.50 (post-promotion)
  • Cached input: $0.15
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Text, image, video, audio, and PDF input; text output
  • Tools and thinking; low, medium, or high; minimal is rejected
Model specifications

gemini-3.6-flash

google/gemini-3.6-flashEarlier stable Flash generation for multimodal and agent workloads.
  • Input / output: $1.50 / $7.50 (post-promotion)
  • Cached input: $0.15
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Text, image, video, audio, and PDF input; text output
  • Tools and thinking
Model specifications
For Gemini 3.8 migration details, including removed sampling parameters and thinking configuration, see Google’s Gemini 3.8 model page. Timbal’s Google Agent route uses the OpenAI-compatible chat API; model-level native capabilities do not imply every native tool or modality is exposed through that route.

​
Other Gemini 3 models

gemini-3.5-flash

google/gemini-3.5-flash
  • Current token pricing: unverified for this redirected ID
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Multimodal input, text output, tools, and thinking
Google now routes this ID to gemini-3.6-flash. It is no longer selectable in AI Studio; the API endpoint is not shutting down. Redirect billing rates are unverified, so catalog prices are null and new cost SQL omits this ID. Use an explicit current Flash ID for new applications.Model specifications

gemini-3.5-flash-lite

google/gemini-3.5-flash-lite
  • Input / output: $0.30 / $2.50, including audio input at the same input rate
  • Cached input: $0.03
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Multimodal input, text output, tools, and thinking
Model specifications

gemini-3.1-pro-preview

google/gemini-3.1-pro-preview
  • Input / output: $2 / $12 at up to 200,000 input tokens
  • Above 200,000 input tokens: $4 / $18 for the entire request
  • Cached input: $0.20; $0.40 above 200,000 input tokens
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Multimodal input, text output, tools, and thinking
  • Preview; no shutdown date announced
Model specifications

gemini-3.1-pro-preview-customtools

google/gemini-3.1-pro-preview-customtoolsVariant that prioritizes custom tools and bash. Same token limits and Standard prices as Gemini 3.1 Pro Preview, including its 200,000-input-token threshold. Preview quality can differ on tasks that do not benefit from tools.Variant documentation

gemini-3.1-flash-lite

google/gemini-3.1-flash-lite
  • Text/image/video input / text output: $0.25 / $1.50
  • Audio input: $0.50
  • Cached input: $0.025 text/image/video; $0.05 audio
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Tools and thinking
  • Earliest announced shutdown: May 7, 2027; replacement: gemini-3.5-flash-lite
Model specifications

gemini-3-flash-preview

google/gemini-3-flash-preview
  • Text/image/video input / text output: $0.50 / $3
  • Audio input: $1
  • Cached input: $0.05 text/image/video; $0.10 audio
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Tools and thinking
  • Preview; no shutdown date announced. Prefer a current stable Flash model for new applications.
Model specifications
Google’s Gemini 3 guide independently lists the 3.1 Pro, 3.1 Flash-Lite, and 3 Flash base prices. For current Standard prices and modality differences, the dedicated pricing page takes precedence over older preview summaries. Do not derive every cache tier from a flat multiplier: for example, 3.1 Pro’s Batch/Flex cache read rate stays at the Standard rate, while 3.5 Flash-Lite’s pricing page rounds Batch/Flex cached input to $0.02.

​
Gemini 2.5 legacy access

Since September 18, 2026, Google limits Gemini 2.5 access to previous users. The general-purpose 2.5 Pro, Flash, and Flash-Lite models are not deprecated and have no announced shutdown date. For new projects use 3.5 Flash-Lite or 3.8 Flash. See the access announcement.

gemini-2.5-pro

google/gemini-2.5-pro
  • Input / output: $1.25 / $10 at up to 200,000 input tokens
  • Above 200,000 input tokens: $2.50 / $15 for the entire request
  • Cached input: $0.125; $0.25 above 200,000 input tokens
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Multimodal input, text output, tools, and thinking
Model specifications

gemini-2.5-flash

google/gemini-2.5-flash
  • Text/image/video input / text output: $0.30 / $2.50
  • Audio input: $1
  • Cached input: $0.03 text/image/video; $0.10 audio
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Multimodal input, text output, tools, and thinking
Model specifications

gemini-2.5-flash-lite

google/gemini-2.5-flash-lite
  • Text/image/video input / text output: $0.10 / $0.40
  • Audio input: $0.30
  • Cached input: $0.01 text/image/video; $0.03 audio
  • Input limit: 1,048,576 tokens; output limit: 65,536
  • Multimodal input, text output, tools, and thinking
Model specifications

​
Image and speech models

These require native Gemini media APIs. Image generation is available through Timbal’s GeminiImages tools; audio synthesis is not provided by the Google Agent chat route. Media rates must not be used as text-output rates.

gemini-2.5-flash-image — migrate

google/gemini-2.5-flash-imageGoogle’s deprecation schedule now lists March 15, 2027, conflicting with the older October 2, 2026 notice still on the pricing page. The catalog retains this compatibility ID and records the conflict. Google recommends gemini-3.1-flash-lite-image as its replacement.
  • Text/image input: $0.30; text output: $2.50
  • Image output: $30 per million image tokens (about $0.039 per image)
  • Input and output limits: 32,768 tokens each
Pricing and shutdown notice

gemini-2.5-pro-preview-tts

google/gemini-2.5-pro-preview-tts
  • Text input: $1; audio output: $20
  • Input limit: 8,192 tokens; output limit: 16,384
  • Native TTS only; no tools, thinking, or caching
  • Catalog text-output price is null because this model outputs audio
  • Shuts down November 17, 2026; migrate to gemini-3.8-flash-tts or gemini-3.8-flash-lite-tts
Model specifications

gemini-2.5-flash-preview-tts

google/gemini-2.5-flash-preview-tts
  • Text input: $0.50; audio output: $10
  • Input limit: 8,192 tokens; output limit: 16,384
  • Native TTS only; no tools, thinking, or caching
  • Catalog text-output price is null because this model outputs audio
  • Shuts down November 17, 2026; migrate to gemini-3.8-flash-tts or gemini-3.8-flash-lite-tts
Model specifications
The current native model catalog also includes gemini-3.8-flash-tts, gemini-3.8-flash-lite-tts, gemini-3.8-live, gemini-3.8-live-extended-thinking, gemini-3.5-transcribe, gemini-3.5-transcribe-live, gemini-3.5-live-translate-preview, gemini-omni-1.1-flash, and the stable image models gemini-3.1-flash-image, gemini-3.1-flash-lite-image, and gemini-3-pro-image. It now also includes gemini-nano-banana-2.1. Their native endpoints and output types require separate integrations; listing them here does not register them as Agent chat models. Use the native pricing sections for their modality-specific rates.

​
Cost accounting boundaries

The catalog’s input_price, output_price, and cached_input_price describe text rates; long_context records full-request thresholds. Audio, generated images/video, grounding calls, and cache storage are not represented by these fields and are not included in text-only cost estimates. Even when a model prices audio input like text, that does not add an audio charge to the text cost table. Cached audio also has its own rates on some models; do not apply the text-cache rate to it. Standard cache storage for 3.1 Pro and 2.5 Pro is $4.50 per million token-hours; the other listed general-purpose Flash models at post-promotion rates use $1. Google Search grounding on Gemini 3 is billed per individual search query after its shared monthly allowance, while Gemini 2.5 uses grounded-prompt billing after its daily allowance. A request can trigger multiple search queries. Consult Google’s billing details before estimating an entire workflow.