API cost decision in 10 seconds

🔥Claude Sonnet 4.6 vs 🔥Gemini 3.1 Flash Lite Preview

Pick Gemini 3.1 Flash Lite Preview when budget and context both matter.

Pricing data updated: 2026-05-15T02:08:14Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Gemini 3.1 Flash Lite Preview when budget and context both matter.

On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite Preview is estimated at $1 vs $10.5 for Claude Sonnet 4.6, saving $9.5 (90.5% lower).

Cost-first pickGemini 3.1 Flash Lite Preview

Context-first pickGemini 3.1 Flash Lite Preview

Sample savings$9.590.5%

10x traffic gap$95

Gemini 3.1 Flash Lite Preview is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $95. Use the calculator below to replace the sample workload with your own token volume.

Cheaper input Gemini 3.1 Flash Lite Preview $3 vs $0.25 / 1M

Gemini 3.1 Flash Lite Preview is $2.75 cheaper per 1M input tokens (91.7% lower; 12x difference).

Cheaper output Gemini 3.1 Flash Lite Preview $15 vs $1.5 / 1M

Gemini 3.1 Flash Lite Preview is $13.5 cheaper per 1M output tokens (90% lower; 10x difference).

Larger context Gemini 3.1 Flash Lite Preview 1M vs 1.05M

Gemini 3.1 Flash Lite Preview has 48.58K more context (1.05x larger).

Sample workload Gemini 3.1 Flash Lite Preview $10.5 vs $1

Gemini 3.1 Flash Lite Preview is $9.5 cheaper on the standard workload (90.5% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Claude Sonnet 4.6 Calculating… Estimated API cost

Gemini 3.1 Flash Lite Preview Calculating… Estimated API cost

Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

Gemini 3.1 Flash Lite Preview has the lower input price; Gemini 3.1 Flash Lite Preview has the lower output price; Gemini 3.1 Flash Lite Preview offers the larger context window. For the 1M input plus 500K output sample, Gemini 3.1 Flash Lite Preview is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $10.5 for Claude Sonnet 4.6 and $1 for Gemini 3.1 Flash Lite Preview.

Best Fit

Choose Claude Sonnet 4.6 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Choose Gemini 3.1 Flash Lite Preview when you care most about lower input-token price, lower output-token price, and larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite Preview is estimated at $1 vs $10.5 for Claude Sonnet 4.6, saving $9.5 (90.5% lower).
Gemini 3.1 Flash Lite Preview is $9.5 cheaper on the standard workload (90.5% lower).
Gemini 3.1 Flash Lite Preview is $2.75 cheaper per 1M input tokens (91.7% lower; 12x difference).
Gemini 3.1 Flash Lite Preview is $13.5 cheaper per 1M output tokens (90% lower; 10x difference).
Gemini 3.1 Flash Lite Preview has 48.58K more context (1.05x larger).

Head-to-Head Specs

Feature	🔥Claude Sonnet 4.6 (Anthropic)	🔥Gemini 3.1 Flash Lite Preview (Google)
Input Price prompt tokens per 1M	$3	$0.25
Completion Price per 1M tokens	$15	$1.5
Sample Workload Cost 1M input + 500K output	$10.5	$1
Context Window	1M	1.05M
Release Date	2026-02-17	2026-03-03
Popularity Rank current rank	#3	#19

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Gemini 3.1 Flash Lite Preview	On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite Preview is estimated at $1 vs $10.5 for Claude Sonnet 4.6, saving $9.5 (90.5% lower).
High-volume input processing	Gemini 3.1 Flash Lite Preview	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Gemini 3.1 Flash Lite Preview	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Gemini 3.1 Flash Lite Preview	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Claude 3 Haiku can replace Claude Sonnet 4.6 when lower sample workload cost matters most: $0.88.
Claude 3.5 Haiku can replace Claude Sonnet 4.6 when lower sample workload cost matters most: $2.8.
Anthropic Claude Haiku Latest can replace Claude Sonnet 4.6 when lower sample workload cost matters most: $3.5.
Claude Haiku 4.5 can replace Claude Sonnet 4.6 when lower sample workload cost matters most: $3.5.

Larger context near this budget

Grok 4.1 Fast offers 2M context with $0.45 sample workload cost.
Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
Grok 4 Fast offers 2M context with $0.45 sample workload cost.

Popular competitors

Hy3 preview · Tencent · #1
Claude Opus 4.7 · Anthropic · #2
DeepSeek V4 Flash · DeepSeek · #4
Gemini 3 Flash Preview · Google · #5

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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Anthropic catalog

Review all tracked Anthropic models before deciding whether this matchup is the right shortlist.

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Google catalog

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Claude Sonnet 4.6

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...

Gemini 3.1 Flash Lite Preview

Gemini 3.1 Flash Lite Preview is Google's high-efficiency model optimized for high-volume use cases. It outperforms Gemini 2.5 Flash Lite on overall quality and approaches Gemini 2.5 Flash performance across...