Claude Haiku 4.5Gemini 3.1 Flash Litev = reported by the model’s maker. — = no public score yet. Arena bars span the range across every model we grade.
What it costs you
Drag to match your monthly usage.
Claude Haiku 4.5$400 /month
Gemini 3.1 Flash Lite$110 /month
Gemini 3.1 Flash Lite saves you $290 a month at this usage, $3,480 a year.
At a glance
Attribute
Claude Haiku 4.5
Gemini 3.1 Flash Lite
Made by
Anthropic
Google
Availability
Coming soon
Coming soon
Overall grade
Strong · 57.0
Good · 54.4
Overall rank
#42 of 67
#46 of 67
Input price
$1.00 per 1M
$0.25 per 1M
Output price
$5.00 per 1M
$1.50 per 1M
Context window
200,000 tokens
1,000,000 tokens
Reasoning levels
Yes
Yes
Reads images
Yes
Yes
Model ID
claude-haiku-4-5
gemini-3.1-flash-lite
Try both with one key
Same endpoint, same key, both hosted in the USA. Change one word to switch models, in Claude Code, Cursor, Cline or your own code.
# Ask either model the same thingcurlhttps://fullsendai.com/v1/chat/completions \-H"Authorization: Bearer $FULLSEND_API_KEY" \-d'{"model": "claude-haiku-4-5", "messages": [...]}'# …then swap one word-d'{"model": "gemini-3.1-flash-lite", "messages": [...]}'
Questions
Is Claude Haiku 4.5 or Gemini 3.1 Flash Lite better?
Claude Haiku 4.5 grades 57.0 against 54.4 for Gemini 3.1 Flash Lite, from public benchmarks.
Which is cheaper, Claude Haiku 4.5 or Gemini 3.1 Flash Lite?
Gemini 3.1 Flash Lite: $0.25 in and $1.50 out per million tokens, against $1.00 and $5.00 through FullsendAI.
Which has the larger context window?
Gemini 3.1 Flash Lite, with 1,000,000 tokens.
Can I use both with one API key?
Yes, once they launch: both are coming soon, at the prices shown, and both will use the same FullsendAI key.
Scores: LMArena (CC BY 4.0), SWE-bench, and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.
