Announced API price changes and model retirement dates, verified against official provider documentation. https://tokengauge.dev/ 2026-10-05T00:00:00Z TokenGauge https://tokengauge.dev/price-changes/#google-2027-01-01 2027-01-01T00:00:00Z

The Google pricing page states current rates are valid only through 2026-12-31 and double on 2027-01-01: input rises from $0.75 to $1.50, output from $3.75 to $7.50, and context-cache reads from $0.075 to $0.15 per million tokens. Caching does not soften the increase — every rate doubles together. Any cost model built on current Flash pricing needs revisiting before year end. Affected models: Gemini 3.7 Flash, Gemini 3.6 Flash.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-5-2025-08-07 2026-12-11T00:00:00Z

GPT-5 (2025-08-07) (gpt-5-2025-08-07) stops working on 2026-12-11. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-5-mini-2025-08-07 2026-12-11T00:00:00Z

GPT-5 mini (2025-08-07) (gpt-5-mini-2025-08-07) stops working on 2026-12-11. The official replacement is gpt-5.6-terra. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-5-nano-2025-08-07 2026-12-11T00:00:00Z

GPT-5 nano (2025-08-07) (gpt-5-nano-2025-08-07) stops working on 2026-12-11. The official replacement is gpt-5.6-luna. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-5-pro-2025-10-06 2026-12-11T00:00:00Z

GPT-5 pro (2025-10-06) (gpt-5-pro-2025-10-06) stops working on 2026-12-11. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-o3-2025-04-16 2026-12-11T00:00:00Z

o3 (o3-2025-04-16) stops working on 2026-12-11. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-image-1-mini 2026-12-01T00:00:00Z

gpt-image-1-mini (gpt-image-1-mini) stops working on 2026-12-01. The official replacement is gpt-image-2. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-image-1.5 2026-12-01T00:00:00Z

gpt-image-1.5 (gpt-image-1.5) stops working on 2026-12-01. The official replacement is gpt-image-2. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-chatgpt-image-latest 2026-12-01T00:00:00Z

chatgpt-image-latest (chatgpt-image-latest) stops working on 2026-12-01. The official replacement is gpt-image-2. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#anthropic-claude-sonnet-4-5-20250929 2026-11-30T00:00:00Z

Claude Sonnet 4.5 (claude-sonnet-4-5-20250929) stops working on 2026-11-30. The official replacement is claude-sonnet-5-5. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-3.5-turbo-0125 2026-10-23T00:00:00Z

GPT-3.5 Turbo 0125 (gpt-3.5-turbo-0125) stops working on 2026-10-23. The official replacement is gpt-5.6-terra. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-4-0613 2026-10-23T00:00:00Z

GPT-4 0613 (gpt-4-0613) stops working on 2026-10-23. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-4-1106-preview 2026-10-23T00:00:00Z

GPT-4 1106 preview (gpt-4-1106-preview) stops working on 2026-10-23. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-4-turbo 2026-10-23T00:00:00Z

GPT-4 Turbo (gpt-4-turbo) stops working on 2026-10-23. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-4.1-nano 2026-10-23T00:00:00Z

GPT-4.1 nano (gpt-4.1-nano) stops working on 2026-10-23. The official replacement is gpt-5.6-luna. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-4o-2024-05-13 2026-10-23T00:00:00Z

GPT-4o (2024-05-13) (gpt-4o-2024-05-13) stops working on 2026-10-23. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-o1-2024-12-17 2026-10-23T00:00:00Z

o1 (o1-2024-12-17) stops working on 2026-10-23. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-o1-pro-2025-03-19 2026-10-23T00:00:00Z

o1-pro (o1-pro-2025-03-19) stops working on 2026-10-23. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-o3-mini-2025-01-31 2026-10-23T00:00:00Z

o3-mini (o3-mini-2025-01-31) stops working on 2026-10-23. The official replacement is gpt-5.6-sol. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-o4-mini-2025-04-16 2026-10-23T00:00:00Z

o4-mini (o4-mini-2025-04-16) stops working on 2026-10-23. The official replacement is gpt-5.6-terra. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/tools/model-deprecation-tracker/#openai-gpt-image-1 2026-10-23T00:00:00Z

gpt-image-1 (gpt-image-1) stops working on 2026-10-23. The official replacement is gpt-image-2. Calls to a retired model fail outright; there is no fallback to a newer model.

https://tokengauge.dev/price-changes/#deepseek-2026-10-05 2026-10-05T00:00:00Z

DeepSeek now lists deepseek-flash (DeepSeek-V4.1-Flash) as its Flash model. The legacy name deepseek-v4-flash is still accepted but is served by V4.1 Flash at the new rates. At peak, input fell from $0.44 to $0.30, output from $1.32 to $1.20, and cache hits from $0.014 to $0.006 per million tokens; off-peak rates remain half of peak ($0.15, $0.60 and $0.003). Peak hours are unchanged (01:00-04:00 and 06:00-10:00 UTC, Monday through Friday) but now exclude Chinese public holidays, which bill off-peak in full. V4 Pro pricing is unchanged. DeepSeek published no effective date; the change was observed between the 2026-08-24 and 2026-10-05 verification passes. Affected models: DeepSeek Flash (V4.1).

https://tokengauge.dev/price-changes/#anthropic-2026-08-31 2026-08-31T00:00:00Z

The $2/$10 rate was announced as introductory pricing through 2026-08-31, with a rise to $3/$15 scheduled for 2026-09-01. Anthropic has since confirmed that increase will not happen and $2/$10 is now standard. Teams that budgeted for $3/$15 can revise downward. Affected models: Claude Sonnet 5.

https://tokengauge.dev/price-changes/#openai-2026-08-24 2026-08-24T00:00:00Z

Sol dropped from $5.00 to $4.00 input and $30.00 to $20.00 output per million tokens, with cached input falling from $0.50 to $0.40. At the same time OpenAI split the 5.6 family into "short context" and "long context" columns divided at 272,000 tokens. Above that threshold Sol bills $8.00 input and $30.00 output, Terra $4.00 and $18.00, and Luna $0.40 and $1.80 — input doubles and output rises 1.5x. For prompts under 272K this is a straightforward 33% cut on Sol output; for prompts above it, Sol output is unchanged at $30.00 and input is now 1.6x what it used to be. OpenAI published no effective date; the change was observed between the 2026-08-18 and 2026-08-24 verification passes. Affected models: GPT-5.6 Sol, GPT-5.6 Terra, GPT-5.6 Luna.

https://tokengauge.dev/price-changes/#deepseek-2026-08-16 2026-08-16T00:00:00Z

V4 Flash output went from a flat $0.28 per million tokens to $1.32 at peak and $0.66 off-peak. V4 Pro output went from $0.87 to $3.96 peak and $1.98 off-peak. Peak hours are 01:00-04:00 and 06:00-10:00 UTC, Monday through Friday; every other hour — including the entire weekend — bills at half the peak rate. Measured at peak, output pricing rose 4.7x; even off-peak it rose 1.4x. Affected models: DeepSeek Flash (V4.1), DeepSeek V4 Pro.