AI model comparison

Claude Haiku 5.5 vs Solar Mini 4

Side by side comparison of Claude Haiku 5.5 and Solar Mini 4 on pricing, benchmark scores, context window, and more.

Claude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use.

Input / 1M
$0.10
Output / 1M
$0.50
Context
1M

Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window.

Input / 1M
$0.05
Output / 1M
$0.20
Context
524K

Comparing image generators? Compare image models

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

upstage logo

Solar Mini 4

2.3x cheaper for a typical chat

Higher intelligence score

Not available

Not enough benchmark data

Larger context window

anthropic logo

Claude Haiku 5.5

1M vs 524K tokens

Newer release

anthropic logo

Claude Haiku 5.5

Released October 7, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

anthropic logoClaude Haiku 5.536.2
upstage logoSolar Mini 4Not available

Coding index

anthropic logoClaude Haiku 5.5Not available
upstage logoSolar Mini 4Not available

Agentic index

anthropic logoClaude Haiku 5.5Not available
upstage logoSolar Mini 4Not available

Pricing

Claude Haiku 5.5 vs Solar Mini 4 API pricing

Per-token API rates. Cheaper option highlighted.

Metricanthropic logoClaude Haiku 5.5upstage logoSolar Mini 4
Input tokensPer 1M tokens$0.10$0.05
Output tokensPer 1M tokens$0.50$0.20
Cached input (read)Per 1M tokens$0.01$0.01
Cache writePer 1M tokens$0.13Not available
Long-context pricingPer 1M tokens, for very long prompts$0.50 in / $2.50 out above 100KSame rate at any length
Web searchPer request$0.01Not available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

anthropic logoClaude Haiku 5.5$0.45
upstage logoSolar Mini 4$0.20

Coding task

30K in, 4K out

anthropic logoClaude Haiku 5.5$5$2.30 cached
upstage logoSolar Mini 4$2.30$0.95 cached

Long document summary

150K in, 2K out

anthropic logoClaude Haiku 5.5$16$2.50 cached
upstage logoSolar Mini 4$7.90$1.15 cached

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricanthropic logoClaude Haiku 5.5upstage logoSolar Mini 4
Context window1M tokens524K tokens
Max output128K tokens131K tokens
Input typesFile, Image, TextText
Output typesTextText
Reasoning effort levelsMax, Extra high, High, Medium, Low, NoneMax, Extra high, High, Medium, Low, Minimal, None
Default reasoning effortMediumMedium
Release dateOctober 7, 2026September 23, 2026

Features

Supported features

API features available for each model.

Metricanthropic logoClaude Haiku 5.5upstage logoSolar Mini 4
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureNot supportedSupported
Stop sequencesSupportedNot supported
Deterministic seedNot supportedNot supported
Verbosity controlSupportedNot supported

Our take

Solar Mini 4 is 2.3x cheaper for a typical chat. Claude Haiku 5.5 has the larger context window (1M vs 524K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Claude Haiku 5.5 or Solar Mini 4 cheaper?

Solar Mini 4 is cheaper for a typical chat (2K input tokens and 500 output tokens). Solar Mini 4 costs $0.05 per 1M input tokens and $0.20 per 1M output tokens, while Claude Haiku 5.5 costs $0.10 per 1M input tokens and $0.50 per 1M output tokens.

Which has a bigger context window, Claude Haiku 5.5 or Solar Mini 4?

Claude Haiku 5.5 supports up to 1M tokens of context, compared with 524K for Solar Mini 4.

Can I use Claude Haiku 5.5 and Solar Mini 4 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Claude Haiku 5.5 and Solar Mini 4 answer side by side and keep the better response.

anthropic logoupstage logo

Why choose? Ask both.

Send one prompt to Claude Haiku 5.5 and Solar Mini 4 at the same time. Compare the answers side by side and keep the best one.