Claude Sonnet 5.5 vs Gemini 2.5 Flash Lite
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on September 30, 2026· 217 models
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.
- Reasoning estimated
- ▲
- Speed estimated
- Input
- Output
- Context
- 1 M tokens
- Max output
- ▲128 K
- Input, $ per 1M tokens
- $2.00
- Output, $ per 1M tokens
- $10.00
- Cache read, $ per 1M
- $0.200
- Batch (input / output)
- $1.00 / $5.00
- Tool calling
- Yes
- Released
- ▲09/28/2026
- Knowledge cutoff
- 2026-06
- API id
- anthropic/claude-sonnet-5.5
Gemini 2.5 Flash-Lite is a lightweight reasoning model in the Gemini 2.5 family, optimized for ultra-low latency and cost efficiency.
- Reasoning estimated
- Speed estimated
- ▲
- Input
- Output
- Context
- ▲1 M tokens
- Max output
- 66 K
- Input, $ per 1M tokens
- ▲$0.100
- Output, $ per 1M tokens
- ▲$0.400
- Cache read, $ per 1M
- $0.010
- Batch (input / output)
- $0.050 / $0.200
- Tool calling
- Yes
- Released
- 07/22/2025
- Knowledge cutoff
- 2025-07
- API id
- google/gemini-2.5-flash-lite
Which is the better API choice: Claude Sonnet 5.5 vs Gemini 2.5 Flash Lite?
- Gemini 2.5 Flash Lite: cheapest input (95% less than Claude Sonnet 5.5)
- Gemini 2.5 Flash Lite: cheapest output
- Gemini 2.5 Flash Lite: largest context (1 M)
- Claude Sonnet 5.5: the newest (09/28/2026)
- Claude Sonnet 5.5: most reasoning (estimated)
- Gemini 2.5 Flash Lite: the fastest (estimated)
Gemini 2.5 Flash Lite costs 95% less on input and 96% less on output than Claude Sonnet 5.5 ($0.100 / $0.400 versus $2.00 / $10.00 per million tokens). Gemini 2.5 Flash Lite accepts more context (1 M). On capabilities, only Gemini 2.5 Flash Lite accepts audio. Claude Sonnet 5.5 and Gemini 2.5 Flash Lite offer a batch tier at half price for jobs that do not need an immediate answer.
What would your product cost?
Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.
With Gemini 2.5 Flash Lite you save $66.90 a month versus Claude Sonnet 5.5 (96% less).
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- 4DeepSeek V4 Flash 0731 DeepSeek$1.55
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Paste your prompt: tokens and cost per model
Rough estimate (about 4 characters per token). Nothing is sent to any server.
Cost of sending it 1,000 times (input only)
- 1Gemini 2.5 Flash Lite Google$0.008
- 2Claude Sonnet 5.5 Anthropic$0.152
- 3Claude Sonnet 5 Anthropic$0.152
- 4Claude Opus 5.5 Anthropic$0.304
- 5Claude Opus 5 Anthropic$0.380
- 6Claude Opus 4.8 Anthropic$0.380
- 7Claude Fable 5.1 Anthropic$0.760
- 8Claude Fable 5 Anthropic$0.760
Popular comparisons
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- GPT-6.1 Sol vs Gemini 3.8 Flash
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- GPT-6.1 Sol vs Grok 4.7
- Gemini 3.8 Flash vs DeepSeek V4.1 Flash
- Gemini 3.8 Flash vs Grok 4.7
- DeepSeek V4.1 Flash vs Grok 4.7
Frequently asked questions
Which is the better API choice: Claude Sonnet 5.5 vs Gemini 2.5 Flash Lite?
Gemini 2.5 Flash Lite costs 95% less on input and 96% less on output than Claude Sonnet 5.5 ($0.100 / $0.400 versus $2.00 / $10.00 per million tokens). Gemini 2.5 Flash Lite accepts more context (1 M). On capabilities, only Gemini 2.5 Flash Lite accepts audio. Claude Sonnet 5.5 and Gemini 2.5 Flash Lite offer a batch tier at half price for jobs that do not need an immediate answer.
Which is cheaper: Claude Sonnet 5.5 and Gemini 2.5 Flash Lite?
Gemini 2.5 Flash Lite is cheaper: $0.100 per million input tokens and $0.400 per million output tokens, versus $2.00 / $10.00 for Claude Sonnet 5.5.
Which has more context: Claude Sonnet 5.5 and Gemini 2.5 Flash Lite?
Gemini 2.5 Flash Lite accepts 1 M tokens of context; Claude Sonnet 5.5 accepts 1 M.
Which is newer: Claude Sonnet 5.5 and Gemini 2.5 Flash Lite?
Claude Sonnet 5.5 was released on 09/28/2026; Gemini 2.5 Flash Lite on 07/22/2025.
What would 10,000 requests a month cost with Claude Sonnet 5.5 and Gemini 2.5 Flash Lite?
With 1,500 input and 400 output tokens per request: Claude Sonnet 5.5: $70.00; Gemini 2.5 Flash Lite: $3.10 a month, at list price.
Where do the prices come from and how often are they updated?
From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.
What does price per million tokens mean?
It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.
Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.