Comparison

Claude Opus 4.7 vs Claude Opus 4.6: What Actually Changed for Coding Teams

Q: What is the Claude Opus 4.7 model ID?

The Claude API model ID is claude-opus-4-7.

Q: Does Claude Opus 4.7 cost more than Claude Opus 4.6?

Official pricing is the same at $5 / MTok input and $25 / MTok output. But Anthropic says Opus 4.7 may use roughly 1.0x to 1.35x more tokens for the same input text, so effective task cost can still rise.

Q: Does Claude Opus 4.7 still support 1M context?

Yes. Anthropic's current model docs list a 1M token context window for Opus 4.7.

EvoLink Team

Product Team

April 16, 2026

10 min read

Last verified: April 16, 2026. All product, pricing, and migration claims below are checked against Anthropic's official announcement, product page, pricing page, and Claude API docs on that date.

Claude Opus 4.7 vs Claude Opus 4.6 is not a minor naming change. Anthropic positions Opus 4.7 as the direct upgrade to Opus 4.6, keeps the same headline API pricing, and promises a step-change in agentic coding. But developers should not read that as "drop-in identical." The migration guide confirms breaking API changes, an updated tokenizer that can use roughly 1.0x to 1.35x more tokens on the same input, and stricter behavior around thinking and sampling.

If your team uses Claude for coding, tool use, or long-running agents, Opus 4.7 is the version to evaluate first. If your prompts, traces, and cost controls were tuned tightly for Opus 4.6, do a deliberate migration instead of a blind model swap.

TL;DR

Yes, Opus 4.7 is the new flagship. Anthropic calls it its most capable generally available model and recommends migrating from Opus 4.6.
Headline pricing is unchanged. Official pricing remains $5 / MTok input and $25 / MTok output.
Per-task cost can still rise. Anthropic says the updated tokenizer can map the same input to roughly 1.0x to 1.35x more tokens, and higher effort levels can also increase output tokens.
Migration is not just a model ID swap. thinking behavior changed, non-default temperature / top_p / top_k are no longer supported, and reasoning display defaults changed.
Best fit is clearer than before. Opus 4.7 is aimed at coding, agents, and high-autonomy engineering tasks more than generic "best at everything" positioning.

Quick comparison

Area	Claude Opus 4.6	Claude Opus 4.7	What it means
Status	Previous flagship	Current flagship	Anthropic recommends 4.7 for the hardest tasks
Claude API ID	`claude-opus-4-6`	`claude-opus-4-7`	Direct model ID swap required
Official pricing	`$5 / MTok` input, `$25 / MTok` output	`$5 / MTok` input, `$25 / MTok` output	Same headline rate
Context window	`1M` tokens	`1M` tokens	No headline context bump
Max output	`128K`	`128K`	Same synchronous Messages API output ceiling in current docs
Thinking model	Adaptive thinking plus legacy extended-thinking compatibility	Adaptive thinking only	Some old request payloads break
Sampling controls	Existing 4.6 prompts may include them	Non-default `temperature`, `top_p`, `top_k` return `400`	Remove custom sampling knobs
Token behavior	Prior tokenizer	Updated tokenizer	Real task cost can change even at same list price

What Reddit users are worried about right now

The Reddit discussion is useful here because it highlights the exact developer anxieties that matter for production adoption.

One user in r/ClaudeAI summarized the main cost concern:

"same pricing... 4.7 / 4.6.. it feels like we got 'smart' 4.6 back but with the new higher token usage"
Source: https://www.reddit.com/r/ClaudeAI/comments/1sn57af/introducing_claude_opus_47_our_most_capable_opus/

That concern is directionally fair. Anthropic's own migration notes explicitly say Opus 4.7 uses an updated tokenizer, and the same text may consume up to roughly 35% more input tokens depending on content type. So "same price" does not guarantee the same bill for the same workload.

Another recurring question is about thinking controls:

"Does adaptive thinking OFF mean no thinking at all? ... Let me set thinking to MAX manually."
Source: https://www.reddit.com/r/claude/comments/1sn56rb/opus_47_adaptive_is_out/

Anthropic's migration guide answers most of that directly:

thinking: { type: "enabled" } is no longer supported on Opus 4.7
the replacement is thinking: { type: "adaptive" }
adaptive thinking is off by default if you omit the thinking field
Anthropic recommends starting with high or xhigh effort for coding and agentic work

There is also rollout friction in the launch threads, with users reporting staggered availability in Claude Code. That matters for app users, but for API buyers the actionable part is simpler: the model ID is live now, and the migration guide is already published.

What Anthropic officially changed in Opus 4.7

Anthropic's own announcement is very explicit about the product angle. Opus 4.7 is being sold as a coding and agent model first:

stronger advanced software engineering
better handling of complex, long-running tasks
more precise instruction following
better self-verification before reporting results
substantially better vision, including higher-resolution image understanding

That positioning matches the customer quotes Anthropic chose to highlight. Most of them are about coding reliability, tool use, agent workflows, code review, and autonomy, not casual chat quality.

Anthropic also says Opus 4.7 is available today across:

Claude products
the Claude API
Amazon Bedrock
Google Cloud Vertex AI
Microsoft Foundry

One nuance worth noting: the current model overview says Opus 4.7 on AWS is available through Bedrock in research preview, so teams using multiple provider channels should verify availability by serving path rather than assuming every channel is equally mature on day one.

API and migration changes developers should care about

This is the section most announcement posts underplay.

1. The model ID changed

If you are calling the Anthropic Messages API directly, the simplest migration step is:

model = "claude-opus-4-6"  # before
model = "claude-opus-4-7"  # after

But that is only the beginning.

2. Extended thinking payloads break

Anthropic says the old extended-thinking format is no longer supported on Opus 4.7 and will return a 400 error. The migration path is:

thinking={"type": "adaptive"}
output_config={"effort": "high"}

That means teams with old budget_tokens-style reasoning scaffolding need to update code, SDK wrappers, and internal examples.

3. Sampling parameters are effectively gone

The migration guide says non-default temperature, top_p, and top_k values return a 400 error on Opus 4.7. If your app was using temperature=0 or hand-tuned sampling for deterministic output, you need to remove those knobs and test prompt-based alternatives.

4. Thinking text is omitted by default

Opus 4.7 still thinks, but the visible reasoning text is now omitted unless you explicitly request summarized display. If your product streams visible reasoning to users as a progress cue, this is a real UX regression unless you opt back in with:

thinking={
  "type": "adaptive",
  "display": "summarized"
}

5. Token accounting changed

This is the most important cost-control detail in the whole launch.

Anthropic says:

the same input may use roughly 1.0x to 1.35x more tokens
/v1/messages/count_tokens will return different counts for Opus 4.7 than for Opus 4.6
higher effort levels can increase output token usage, especially in later agentic turns

So if your product has hard ceilings on cost, latency, or compaction triggers, update those guardrails before routing real traffic to 4.7.

Pricing, context, and "is it actually more expensive?"

At list pricing, the answer is simple:

Model	Input	Output	Prompt cache write	Prompt cache read
Claude Opus 4.7	`$5 / MTok`	`$25 / MTok`	`$6.25 / MTok`	`$0.50 / MTok`
Claude Opus 4.6	`$5 / MTok`	`$25 / MTok`	`$6.25 / MTok`	`$0.50 / MTok`

At workload pricing, the answer is: possibly yes.

If the same request uses more input tokens under the new tokenizer, or if your team runs high, xhigh, or max effort on long coding sessions, your effective cost per resolved task may go up even though the official rate card is unchanged.

Anthropic's own spin is that net token efficiency improves on its internal coding evaluation. That may be true on their harness. It still does not remove the need to test your own workload, especially if your traffic has:

large prompts
big repositories
many follow-up turns
strict latency budgets
visible reasoning streams

Should most coding teams migrate now?

My view: yes, but with a harness, not with hope.

Migrate first if your main workload is:

multi-step coding
code review
tool-using agents
async engineering tasks
long-running debugging and repair loops

Wait to make it default if your app is heavily optimized around:

old reasoning payloads
visible thinking traces
strict token ceilings
deterministic-style prompt setups with custom sampling values

The safest rollout plan is:

Swap a small percentage of coding traffic from claude-opus-4-6 to claude-opus-4-7
Re-run your own eval set on bug fixing, code review, and long-horizon tasks
Measure token deltas, not just win rate
Retune effort, max_tokens, and compaction thresholds
Promote only after checking both quality and cost per successful task

That is especially relevant because Anthropic itself frames Opus 4.7 as a more literal, more direct, more tightly effort-calibrated model. Those are good traits for production APIs, but they can expose weak prompts faster.

A practical recommendation for EvoLink users

If you are choosing between updating Claude prompts in-place or routing multiple models behind one API layer, the practical move is to test both paths. Opus 4.7 looks like the right Claude upgrade for coding-heavy teams, but the migration is substantial enough that you should preserve fallback options while you retune.

Ready to evaluate Claude Opus 4.7 without hard-switching your stack? Start with this migration guide, then roll traffic gradually from claude-opus-4-6 to claude-opus-4-7.

FAQ

Is Claude Opus 4.7 better than Claude Opus 4.6?

Anthropic says yes, especially for agentic coding, instruction following, and long-running engineering tasks. For production teams, the more useful answer is: treat it as the new default candidate, then verify that gain on your own eval set.

What is the Claude Opus 4.7 model ID?

The Claude API model ID is claude-opus-4-7.

Does Claude Opus 4.7 cost more than Claude Opus 4.6?

Official pricing is the same at $5 / MTok input and $25 / MTok output. But Anthropic says Opus 4.7 may use roughly 1.0x to 1.35x more tokens for the same input text, so effective task cost can still rise.

Does Claude Opus 4.7 still support 1M context?

Yes. Anthropic's current model docs list a 1M token context window for Opus 4.7.

What changed in thinking controls on Opus 4.7?

Legacy extended-thinking payloads are no longer supported. Opus 4.7 uses adaptive thinking, and Anthropic recommends controlling depth with the effort parameter.

Can I still use temperature with Claude Opus 4.7?

Not in the old way. Anthropic's migration guide says non-default temperature, top_p, and top_k values return a 400 error on Opus 4.7.

Should I update from Claude Opus 4.6 right away?

If your main workload is coding and agents, yes, you should evaluate it immediately. If your system depends on old reasoning payloads, visible thinking output, or tightly tuned token budgets, do a staged migration rather than a same-day hard cutover.

Sources

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#Claude Opus 4.7 #Claude Opus 4.6 #Anthropic #coding models #agent workflows