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Anthropic Opus 4.6 vs Claude 3 Sonnet 20240229

Compare Anthropic Opus 4.6 from Anthropic and Claude 3 Sonnet 20240229 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

AnthropicAnthropic Opus 4.6AnthropicClaude 3 Sonnet 20240229
Anthropic logo
Anthropic Opus 4.6
Anthropic · text, image → text

Claude Opus 4.6 is Anthropic’s latest state-of-the-art reasoning model. It features an adaptive “thinking” mode that dynamically decides when to think and how much to think. At the default effort level (high), Claude will almost always engage in thinking. At lower effort levels, it may skip thinking for simple problems. ⚠️ The minimum cache token for claude-opus-4-6 has been increased from 1,024 to 4,096 tokens.

Input$5 /M
Output$25 /M
Cache read$0.5 /M
Anthropic logo
Claude 3 Sonnet 20240229
Anthropic · text, image → text

Input$3.3 /M
Output$16.5 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Anthropic Opus 4.6
Claude 3 Sonnet 20240229
Input /M
$5
$3.3
Output /M
$25
$16.5
Cache read /M
$0.5
-
Context length
200,000
NaN
Max output
32,000
0
Time to First Token
-
0.8 s
Throughput
-
66.6 tok/s
Modalities
textimage
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputs
API Formats
Released
-
-

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

anthropic-opus-4-6claude-3-sonnet-20240229

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

anthropic-opus-4-6claude-3-sonnet-20240229

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
anthropic-opus-4-6claude-3-sonnet-20240229
1220132014201520
Overall
12801499
Coding
13171548
Math
12531504
Hard prompts
12811528
Instruction following
12671501
Multi-turn
12771510
Creative writing
12451478
Longer query
12851519
Chinese
12751549
English
12881508
Vision
anthropic-opus-4-6claude-3-sonnet-20240229
1000110012001300
Overall
10161297
OCR
13131313
Diagram
13331333
Homework
13141314

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Claude 3 Sonnet 20240229
$446 /mo
Anthropic Opus 4.6
$675 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Anthropic Opus 4.6, Claude 3 Sonnet 20240229?

Claude 3 Sonnet 20240229: $16.5/M output tokens; Anthropic Opus 4.6: $25/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Anthropic Opus 4.6: 1548; Claude 3 Sonnet 20240229: 1317 (LMArena coding leaderboard).

What inputs and capabilities does each model support?

Anthropic Opus 4.6 accepts text and image input and supports thinking, tool calling, function calling and structured outputs; Claude 3 Sonnet 20240229 accepts text and image input.

Can I call Anthropic Opus 4.6 and Claude 3 Sonnet 20240229 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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