Claude 3 Sonnet 20240229
Anthropic · text, image → text
Input$3.3 /M
Output$16.5 /M
← ModelsClaude 3 Sonnet 20240229Claude Opus 4.8
Claude 3 Sonnet 20240229 vs Claude Opus 4.8
Compare Claude 3 Sonnet 20240229 from Anthropic and Claude Opus 4.8 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.
Claude 3 Sonnet 20240229Claude Opus 4.8+ Add model · 2/4
Claude Opus 4.8
Anthropic · text, image, pdf → text
Claude Opus 4.8 is Anthropic’s newest and most powerful publicly available model. It is suitable for the most complex tasks. It is Anthropic’s strongest model for complex reasoning, long-horizon agent programming, and highly autonomous work.claude-opus-4-8 does not display thought content by default; you need to set the additional parameter "display": "summarized" to enable it
Input$5 /M
Output$25 /M
Cache read$0.5 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Claude 3 Sonnet 20240229
Claude Opus 4.8
Input /M
$3.3
$5
Output /M
$16.5
$25
Cache read /M
-
$0.5
Context length
NaN
1,000,000
Max output
0
128,000
Time to First Token
0.8 s
1.1 s
Throughput
66.6 tok/s
82.6 tok/s
Modalities
textimage
textimagepdf
Supported Parameters
thinkingtoolsfunction callingstructured outputs
API Formats
chat_completions · claude_api
Released
-
May 28, 2026
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.
claude-3-sonnet-20240229claude-opus-4-8
Tokens / day
-
Requests / day
-
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
claude-3-sonnet-20240229claude-opus-4-8
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
-
LMArena Benchmarks
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Text
claude-3-sonnet-20240229claude-opus-4-8
1220132014201520
Overall
12801473
Coding
13171527
Math
12531474
Hard prompts
12811503
Instruction following
12671477
Multi-turn
12771495
Creative writing
12451465
Longer query
12851499
Chinese
12751523
English
12881480
Vision
claude-3-sonnet-20240229claude-opus-4-8
1000110012001300
Overall
10161279
OCR
12941294
Diagram
13091309
Homework
13201320
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
Claude Opus 4.8
$675 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: Claude 3 Sonnet 20240229, Claude Opus 4.8?
Claude 3 Sonnet 20240229: $16.5/M output tokens; Claude Opus 4.8: $25/M. Use the cost calculator above to estimate your own workload.
How do their coding arena scores compare?
Claude Opus 4.8: 1527; Claude 3 Sonnet 20240229: 1317 (LMArena coding leaderboard).
Which responds faster?
Claude 3 Sonnet 20240229: 0.8s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Which one generates tokens faster?
Claude Opus 4.8 at 82.6 tok/s and Claude 3 Sonnet 20240229 at 66.6 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
Claude 3 Sonnet 20240229 accepts text and image input; Claude Opus 4.8 accepts text, image and PDF input and supports thinking, tool calling, function calling and structured outputs.
Can I call Claude 3 Sonnet 20240229 and Claude Opus 4.8 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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