Both Gemini 3.1 Flash and Claude 4 Haiku target the budget tier, but Gemini Flash is the stronger overall pick for most teams. It has a 1M token context window (5× Haiku's 200K), is significantly cheaper ($0.50 vs $0.80/1M input), and is faster. Claude 4 Haiku's edge is writing quality — Anthropic's training advantage shows in budget-tier prose tone and naturalness. For writing-first automations, Haiku is worth the modest premium. For everything else, Gemini Flash is the better value.
GoogleBudget
Gemini 3.1 Flash
Best cheap AI for broad day-to-day work — now with 1M context.
Winner
VS
AnthropicBudget
Claude 4 Haiku
Best low-cost writing option for fast-moving content teams.
At a glance
Gemini 3.1 Flash
Claude 4 Haiku
Input cost / 1M tokens
$$0.50/1M
$$0.80/1M
Output cost / 1M tokens
$$3.00/1M
$$4.00/1M
Context window
1M tokens
200k tokens
Speed
Very fast
Very fast
Price tier
Budget
Budget
Benchmarks
SWE-bench (coding)
35%
43%
Arena Elo
1,265
1,210
MMLU
84%
80%
How they compare
Which model wins for each use case — and why.
CostGemini 3.1 Flash wins
Gemini 3.1 Flash at $0.50/1M input is 37.5% cheaper than Claude 4 Haiku's $0.80/1M. Output is also cheaper at $3 vs $4/1M.
Context WindowGemini 3.1 Flash wins
Gemini 3.1 Flash supports 1M tokens vs Claude 4 Haiku's 200K — 5× larger. For long-document processing at budget pricing, Gemini Flash wins clearly.
Writing QualityClaude 4 Haiku wins
Claude 4 Haiku produces more natural, tonally consistent prose — the Anthropic writing quality advantage carries even at the budget tier.
SpeedGemini 3.1 Flash wins
Gemini Flash is in the 'Very fast' speed tier with superior throughput for high-volume use cases. Both are fast, but Gemini has the edge on raw throughput.
MultimodalGemini 3.1 Flash wins
Gemini 3.1 Flash has strong multimodal support across text, images, audio, and video. Claude 4 Haiku is text-first with limited multimodal capabilities.
Which should you pick?
Pick Gemini 3.1 Flash if…
You need a budget model for any task type beyond writing-heavy output
Context window size matters — Gemini's 1M tokens vs Haiku's 200K is a meaningful advantage
Cost is the primary constraint and you need the most affordable option
Multimodal inputs (images, audio) are part of your pipeline
For most workflows, Gemini 3.1 Flash is the stronger choice.
The best all-around budget model for most teams. Faster than its predecessor, cheaper, and with a 1M context window that outclasses every other budget option.
The case for each model
What each one is genuinely good at, where it falls down, and when we would steer you away from it.
Our overall pick in this comparison. Against Claude 4 Haiku it costs about 27% less per token and takes 5x the context.
Fast, low-cost model with a 1M token context window — the best budget default for teams running high prompt volumes.
Input
$0.50/1M
Output
$3.00/1M
Context
1M tokens
Speed
Very fast
What people actually use it for
High-volume customer support automation across thousands of daily tickets
Fast content generation for marketing pipelines — drafts, rewrites, translations
Rapid document summarization and classification in processing pipelines
Where it wins
1M token context window at $0.50/$3 per million tokens
2.5× faster time-to-first-token than Gemini 2.5 Flash
Strong multimodal support across text, images, audio, and video
Where it falls down
Not as sharp as premium models on hard reasoning or complex coding
May need more validation on nuanced technical tasks
Skip it if
You need premium reasoning depth or the highest coding benchmark scores.
Our verdict
The best all-around budget model for most teams. Faster than its predecessor, cheaper, and with a 1M context window that outclasses every other budget option.
Gemini 3.1 Flash is the better overall budget pick — it's cheaper, faster, and has a 5× larger context window. Claude 4 Haiku is better specifically for writing quality and tone.
Which is cheaper?
Gemini 3.1 Flash is cheaper at $0.50/$3 per 1M tokens vs Claude 4 Haiku's $0.80/$4. Gemini is about 37.5% cheaper on input and 25% cheaper on output.
Is Claude Haiku good for writing?
Yes — Claude 4 Haiku produces surprisingly good prose for a budget model. Anthropic's training quality shows in tone and naturalness even at the cheapest tier.